Responsorial Psalm
Ps 51:3-4, 5-6ab, 18-19
R. (19b) A heart contrite and humbled, O God, you will not spurn.
Have mercy on me, O God, in your goodness;
in the greatness of your compassion wipe out my offense.
Thoroughly wash me from my guilt
and of my sin cleanse me.
R. A heart contrite and humbled, O God, you will not spurn.
For I acknowledge my offense,
and my sin is before me always:
“Against you only have I sinned,
and done what is evil in your sight.”
R. A heart contrite and humbled, O God, you will not spurn.
For you are not pleased with sacrifices;
should I offer a burnt offering, you would not accept it.
My sacrifice, O God, is a contrite spirit;
a heart contrite and humbled, O God, you will not spurn.
R. A heart contrite and humbled, O God, you will not spurn.

I love how this psalm reminds us that we are sinners and need to be cleansed!  That we need to have a contrite heart and seek forgiveness on a regular basis.