10 Create in me a clean heart, O God; and renew a right spirit within me.
11 Cast me not away from thy presence; and take not thy holy spirit from me.
12 Restore unto me the joy of thy salvation; and uphold me with thy free spirit.
King David was called a man after Gods own heart, but at one point in his life he did recognise his own sin.
God sent the prophet Nathan to tell david a story which led to him seeing his sin before God.
David could have ignored the prophet, but with a sincere heart he came before God and asked the Lord to forgive him and renew a right spirit within him.
Its very easy for us to see the many sins and offences we commit before God, but what about those we don't see.
Let us each day come before the Lord and say, God show me those things in my life which are an offence to you, that i may not see with my own eyes, but that you will reveal to me by your Holy Spirit.