In this Psalm, we have a man who begins in the depths, but realises the intimacy of God’s relationship with him and is prepared to trust Him. By the end of the Psalm, he is taken up with the steadfast love of the Lord and revels in the forgiveness that is available in God.

Psalm 130 English Standard Version (ESV)
My Soul Waits for the Lord
A Song of Ascents.
130 Out of the depths I cry to you, O Lord!
2 O Lord, hear my voice!
Let your ears be attentive
to the voice of my pleas for mercy!

3 If you, O Lord, should mark iniquities,
O Lord, who could stand?
4 But with you there is forgiveness,
that you may be feared.

5 I wait for the Lord, my soul waits,
and in his word I hope;
6 my soul waits for the Lord
more than watchmen for the morning,
more than watchmen for the morning.

7 O Israel, hope in the Lord!
For with the Lord there is steadfast love,
and with him is plentiful redemption.
8 And he will redeem Israel
from all his iniquities.