The following are the readings for the Trinity Sunday, May 26, according to the Revised Common (RCL), Episcopal (ECUSA), Roman Catholic, Church of England, and Canadian (BAS) Lectionaries. All readings are taken from the New Revised Standard Version (NRSV) of the Bible. Unless noted otherwise, the lectionaries of ECUSA, Canada and England are identical to the RCL this Sunday.

OLD TESTAMENT:  Isaiah 6: 1 - 8  (RCL)

Isai 6:1 (NRSV) In the year that King Uzzi'ah died, I saw the Lord sitting on a throne, high and lofty; and the hem of his robe filled the temple. 2 Seraphs were in attendance above him; each had six wings: with two they covered their faces, and with two they covered their feet, and with two they flew. 3 And one called to another and said: 
"Holy, holy, holy is the LORD of hosts; 
the whole earth is full of his glory." 
4 The pivots on the thresholds shook at the voices of those who called, and the house filled with smoke. 5 And I said: "Woe is me! I am lost, for I am a man of unclean lips, and I live among a people of unclean lips; yet my eyes have seen the King, the LORD of hosts!" 
6 Then one of the seraphs flew to me, holding a live coal that had been taken from the altar with a pair of tongs. 7 The seraph touched my mouth with it and said: "Now that this has touched your lips, your guilt has departed and your sin is blotted out." 8 Then I heard the voice of the Lord saying, "Whom shall I send, and who will go for us?" And I said, "Here am I; send me!" 

Deuteronomy 4: 32 - 34, 39 - 40  (Roman Catholic)

Deut 4:32 (NRSV) For ask now about former ages, long before your own, ever since the day that God created human beings on the earth; ask from one end of heaven to the other: has anything so great as this ever happened or has its like ever been heard of? 33 Has any people ever heard the voice of a god speaking out of a fire, as you have heard, and lived? 34 Or has any god ever attempted to go and take a nation for himself from the midst of another nation, by trials, by signs and wonders, by war, by a mighty hand and an outstretched arm, and by terrifying displays of power, as the LORD your God did for you in Egypt before your very eyes? 

39 So acknowledge today and take to heart that the LORD is God in heaven above and on the earth beneath; there is no other. 40 Keep his statutes and his commandments, which I am commanding you today for your own well-being and that of your descendants after you, so that you may long remain in the land that the LORD your God is giving you for all time. 

PSALM 29  (RCL)

Psal 29:1 (NRSV) Ascribe to the LORD, O heavenly beings, 
ascribe to the LORD glory and strength. 
2 Ascribe to the LORD the glory of his name; 
worship the LORD in holy splendor. 
3 The voice of the LORD is over the waters; 
the God of glory thunders, 
the LORD, over mighty waters. 
4 The voice of the LORD is powerful; 
the voice of the LORD is full of majesty. 
5 The voice of the LORD breaks the cedars; 
the LORD breaks the cedars of Lebanon. 
6 He makes Lebanon skip like a calf, 
and Sir'ion like a young wild ox. 
7 The voice of the LORD flashes forth flames of fire. 
8 The voice of the LORD shakes the wilderness; 
the LORD shakes the wilderness of Ka'desh. 
9 The voice of the LORD causes the oaks to whirl, 
and strips the forest bare; 
and in his temple all say, "Glory!" 
10 The LORD sits enthroned over the flood; 
the LORD sits enthroned as king forever. 
11 May the LORD give strength to his people! 
May the LORD bless his people with peace! 

29   Afferte Domino     (ECUSA BCP)
 
1  	Ascribe to the Lord, you gods, *
 	ascribe to the Lord glory and strength.
 
2  	Ascribe to the Lord the glory due his Name; *
 	worship the Lord in the beauty of holiness.
 
3  	The voice of the Lord is upon the waters;
the God of glory thunders; *
 	the Lord is upon the mighty waters.
 
4  	The voice of the Lord is a powerful voice; *
 	the voice of the Lord is a voice of splendor.
 
5  	The voice of the Lord breaks the cedar trees; *
 	the Lord breaks the cedars of Lebanon;
 
6  	He makes Lebanon skip like a calf, *
 	and Mount Hermon like a young wild ox.
 
7  	The voice of the Lord splits the flames of fire;
the voice of the Lord shakes the wilderness; *
 	the Lord shakes the wilderness of Kadesh.
 
8  	The voice of the Lord makes the oak trees writhe *
 	and strips the forests bare.
 
9  	And in the temple of the Lord *
 	all are crying, “Glory!”
 
10  	The Lord sits enthroned above the flood; *
 	the Lord sits enthroned as King for evermore.
 
11  	The Lord shall give strength to his people; *
 	the Lord shall give his people the blessing of peace.

2   A Song of Praise  Benedictus es, Domine   (alt. for ECUSA; BCP)

Song of the Three Young Men, 29-34

Blessed art thou, O Lord God of our fathers; *
    praised and exalted above all for ever.
Blessed are thou for the name of thy Majesty; *
    praised and exalted above all for ever.
Blessed are thou in the temple of thy holiness; *
    praised and exalted above all for ever.
Blessed are thou that beholdest the depths,
and dwellest between the Cherubim; *
    praised and exalted above all for ever.
Blessed art thou on the glorious throne of thy kingdom; *
    praised and exalted above all for ever.
Blessed are thou in the firmament of heaven; *
    praised and exalted above all for ever.
Blessed are thou, O Father, Son, and Holy Spirit; *
 praised and exalted above all for ever.

13   A Song of Praise    Benedictus es, Domine   (alt. for ECUSA; BCP)

Song of the Three Young Men, 29-34

Glory to you, Lord God of our fathers; *
   you are worthy of praise; glory to you. 
Glory to you for the radiance of your holy Name; *
   we will praise you and highly exalt you for ever. 

Glory to you in the splendor of your temple; *
   on the throne of your majesty, glory to you. 
Glory to you, seated between the Cherubim; *
   we will praise you and highly exalt you for ever. 

Glory to you, beholding the depths; *
   in the high vault of heaven, glory to you. 
Glory to you, Father, Son, and Holy Spirit; *
   we will praise you and highly exalt you for ever. 

Psalm 33: 4 - 6, 9, 18 - 20, 22  (Roman Catholic)

Psal 33:4 (NRSV) For the word of the LORD is upright, 
and all his work is done in faithfulness. 
5 He loves righteousness and justice; 
the earth is full of the steadfast love of the LORD. 
6 By the word of the LORD the heavens were made, 
and all their host by the breath of his mouth. 

9 For he spoke, and it came to be; 
he commanded, and it stood firm. 

18 Truly the eye of the LORD is on those who fear him, 
on those who hope in his steadfast love, 
19 to deliver their soul from death, 
and to keep them alive in famine. 
20 Our soul waits for the LORD; 
he is our help and shield. 

22 Let your steadfast love, O LORD, be upon us, 
even as we hope in you. 

NEW TESTAMENT:  Romans 8: 12 - 17  (all)

Roma 8:12 (NRSV) So then, brothers and sisters, we are debtors, not to the flesh, to live according to the flesh-- 13 for if you live according to the flesh, you will die; but if by the Spirit you put to death the deeds of the body, you will live. 14 For all who are led by the Spirit of God are children of God. 15 For you did not receive a spirit of slavery to fall back into fear, but you have received a spirit of adoption. When we cry, "Abba! Father!" 16 it is that very Spirit bearing witness with our spirit that we are children of God, 17 and if children, then heirs, heirs of God and joint heirs with Christ--if, in fact, we suffer with him so that we may also be glorified with him. 

Note: the Roman Catholic lectionary omits vs. 12 & 13.

GOSPEL:  John 3: 1 - 17  (RCL)

John 3:1 (NRSV) Now there was a Phar'isee named Nicode'mus, a leader of the Jews. 2 He came to Jesus by night and said to him, "Rabbi, we know that you are a teacher who has come from God; for no one can do these signs that you do apart from the presence of God." 3 Jesus answered him, "Very truly, I tell you, no one can see the kingdom of God without being born from above." 4 Nicode'mus said to him, "How can anyone be born after having grown old? Can one enter a second time into the mother's womb and be born?" 5 Jesus answered, "Very truly, I tell you, no one can enter the kingdom of God without being born of water and Spirit. 6 What is born of the flesh is flesh, and what is born of the Spirit is spirit. 7 Do not be astonished that I said to you, "You must be born from above.' 8 The wind blows where it chooses, and you hear the sound of it, but you do not know where it comes from or where it goes. So it is with everyone who is born of the Spirit." 9 Nicode'mus said to him, "How can these things be?" 10 Jesus answered him, "Are you a teacher of Israel, and yet you do not understand these things? 
11 "Very truly, I tell you, we speak of what we know and testify to what we have seen; yet you do not receive our testimony. 12 If I have told you about earthly things and you do not believe, how can you believe if I tell you about heavenly things? 13 No one has ascended into heaven except the one who descended from heaven, the Son of Man. 14 And just as Moses lifted up the serpent in the wilderness, so must the Son of Man be lifted up, 15 that whoever believes in him may have eternal life. 
16 "For God so loved the world that he gave his only Son, so that everyone who believes in him may not perish but may have eternal life. 
17 "Indeed, God did not send the Son into the world to condemn the world, but in order that the world might be saved through him. 

Matthew 28: 16 - 20  (Roman Catholic)

Matt 28:16 (NRSV) Now the eleven disciples went to Galilee, to the mountain to which Jesus had directed them. 17 When they saw him, they worshiped him; but some doubted. 18 And Jesus came and said to them, "All authority in heaven and on earth has been given to me. 19 Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, 20 and teaching them to obey everything that I have commanded you. And remember, I am with you always, to the end of the age."