Preface of Baptism, or of Trinity Sunday

The Collect

Almighty Father, whose blessed Son before his passion prayed for his disciples that they might be one, as you and he are one: Grant that your Church, being bound together in love and obedience to you, may be united in one body by the one Spirit, that the world may believe in him whom you have sent, your Son Jesus Christ our Lord; who lives and reigns with you, in the unity of the Holy Spirit, one God, now and for ever. Amen.

Old Testament

Isaiah 35:1-10

The wilderness and the dry land shall be glad,
the desert shall rejoice and blossom;

like the crocus it shall blossom abundantly,
and rejoice with joy and singing.

The glory of Lebanon shall be given to it,
the majesty of Carmel and Sharon.

They shall see the glory of the Lord,
the majesty of our God.


Strengthen the weak hands,
and make firm the feeble knees.

Say to those who are of a fearful heart,
‘Be strong, do not fear!

Here is your God.
He will come with vengeance,

with terrible recompense.
He will come and save you.’


Then the eyes of the blind shall be opened,
and the ears of the deaf unstopped;

then the lame shall leap like a deer,
and the tongue of the speechless sing for joy.

For waters shall break forth in the wilderness,
and streams in the desert;

the burning sand shall become a pool,
and the thirsty ground springs of water;

the haunt of jackals shall become a swamp,
the grass shall become reeds and rushes.


A highway shall be there,
and it shall be called the Holy Way;

the unclean shall not travel on it,
but it shall be for God’s people;
no traveller, not even fools, shall go astray.

No lion shall be there,
nor shall any ravenous beast come up on it;

they shall not be found there,
but the redeemed shall walk there.

And the ransomed of the Lord shall return,
and come to Zion with singing;

everlasting joy shall be upon their heads;
they shall obtain joy and gladness,
and sorrow and sighing shall flee away.

The Psalm

Psalm 122

Laetatus sum

1 I was glad when they said to me, *
"Let us go to the house of the Lord."

2 Now our feet are standing *
within your gates, O Jerusalem.

3 Jerusalem is built as a city *
that is at unity with itself;

4 To which the tribes go up,
the tribes of the Lord, *
the assembly of Israel,
to praise the Name of the Lord.

5 For there are the thrones of judgment, *
the thrones of the house of David.

6 Pray for the peace of Jerusalem: *
"May they prosper who love you.

7 Peace be within your walls *
and quietness within your towers.

8 For my brethren and companions' sake, *
I pray for your prosperity.

9 Because of the house of the Lord our God, *
I will seek to do you good."

The Epistle

Ephesians 4:1-6

I therefore, the prisoner in the Lord, beg you to lead a life worthy of the calling to which you have been called, with all humility and gentleness, with patience, bearing with one another in love, making every effort to maintain the unity of the Spirit in the bond of peace. There is one body and one Spirit, just as you were called to the one hope of your calling, one Lord, one faith, one baptism, one God and Father of all, who is above all and through all and in all.

The Gospel

John 17:6a,15-23

Jesus said, ”I have made your name known to those whom you gave me from the world. I am not asking you to take them out of the world, but I ask you to protect them from the evil one. They do not belong to the world, just as I do not belong to the world. Sanctify them in the truth; your word is truth. As you have sent me into the world, so I have sent them into the world. And for their sakes I sanctify myself, so that they also may be sanctified in truth.

I ask not only on behalf of these, but also on behalf of those who will believe in me through their word, that they may all be one. As you, Father, are in me and I am in you, may they also be in us, so that the world may believe that you have sent me. The glory that you have given me I have given them, so that they may be one, as we are one, I in them and you in me, that they may become completely one, so that the world may know that you have sent me and have loved them even as you have loved me.

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