Responsorial Psalm - Psalm 39(40):2,4,7-10

Here I am, Lord! I come to do your will.

I waited, I waited for the Lord

  and he stooped down to me;

  he heard my cry.

He put a new song into my mouth,

  praise of our God.

Here I am, Lord! I come to do your will.

You do not ask for sacrifice and offerings,

  but an open ear.

You do not ask for holocaust and victim.

  Instead, here am I.

Here I am, Lord! I come to do your will.

In the scroll of the book it stands written

  that I should do your will.

My God, I delight in your law

  in the depth of my heart.

Here I am, Lord! I come to do your will.

Your justice I have proclaimed

  in the great assembly.

My lips I have not sealed;

  you know it, O Lord.

Here I am, Lord! I come to do your will.

Gospel - John 1:29-34

'Look: there is the Lamb of God'

Seeing Jesus coming towards him, John said, ‘Look, there is the lamb of God that takes away the sin of the world. This is the one I spoke of when I said: A man is coming after me who ranks before me because he existed before me. I did not know him myself, and yet it was to reveal him to Israel that I came baptising with water.’ John also declared, ‘I saw the Spirit coming down on him from heaven like a dove and resting on him. I did not know him myself, but he who sent me to baptise with water had said to me, “The man on whom you see the Spirit come down and rest is the one who is going to baptise with the Holy Spirit.” Yes, I have seen and I am the witness that he is the Chosen One of God.’