Psalms 25:1-7 says:

1 Unto thee, O LORD, do I lift up my soul.
2 O my God, I trust in thee: let me not be ashamed, let not mine enemies triumph over me.
3 Yea, let none that wait on thee be ashamed: let them be ashamed which transgress without cause.
4 Show me thy ways, O LORD; teach me thy paths.
5 Lead me in thy truth, and teach me: for thou art the God of my salvation; on thee do I wait all the day.
6 Remember, O LORD, thy tender mercies and thy loving kindnesses; for they have been ever of old.
7 Remember not the sins of my youth, nor my transgressions: according to thy mercy remember thou me for thy goodness’ sake, O LORD.

In worshipping God, we must lift up our souls to Him. It is certain that no one who, by a believing attendance, wait on God, and, by a believing hope, wait for Him, will be ashamed of it. The most advanced believer both needs and desires to be taught of God. If we sincerely desire to know our duty, with a true promise to do it, we may be sure that God will direct us in it. We must wait for this truth and direction, even if it takes days, weeks or years. Can you wait on God?

The psalmist is earnest for the pardon of his sins. When God pardons sin, He is said to remember it no more, which denotes full remission. It is God's goodness, and not ours, His mercy, and not our merit, that must be our plea for the pardon of sin, and all the good we need. This plea we must rely upon, feeling our own unworthiness, and satisfied of the riches of God's mercy and grace. How boundless is that mercy which covers for ever the sins and follies of a youth spent without God and without hope! Blessed be the Lord, the blood of the great Sacrifice can wash away every stain.