Here is a responsorial psalm from the Jerusalem Bible version of Psalm 129 (which is Psalm 130 using the Masoretic numbering sequence):

If you, O Lord, should mark our guilt, Lord, who would survive?

Out of the depths I cry to you, O Lord,

  Lord, hear my voice!

O let your ears be attentive

  to the voice of my pleading.

If you, O Lord, should mark our guilt, Lord, who would survive?

If you, O Lord, should mark our guilt,

  Lord, who would survive?

But with you is found forgiveness:

  for this we revere you.

If you, O Lord, should mark our guilt, Lord, who would survive?

My soul is waiting for the Lord.

  I count on his word.

My soul is longing for the Lord

  more than watchman for daybreak.

(Let the watchman count on daybreak

  and Israel on the Lord.)

If you, O Lord, should mark our guilt, Lord, who would survive?

Because with the Lord there is mercy

  and fullness of redemption,

Israel indeed he will redeem

  from all its iniquity.

If you, O Lord, should mark our guilt, Lord, who would survive?