Remember your compassion and your mercy, O Lord,
for they are ages old.
Remember no more the sins of my youth;
remember me according to your mercy
because of your goodness, Lord. (6-7)
My psalm of choice for Penance form I is the 51st. Most people, I think, use a memorized non-Scriptural form. When did psalms begin to be suggested? I like the development as an addition. What do you readers think?