We're not so bad after all. We think we're more acceptable in God's sight because last night we witnessed to two rival graffitti gangs, a Buddhist Monk and a supreme court judge. Look back at verse 12. Get the order right. Forgiveness, Joy, Witness.
Witness comes as a result of the joy of salvation.
The joy of salvation comes from knowing our sins are forgiven. Happy is the one to whom the Lord does not impute iniquity. I'm sorry if I'm labouring the point, but I want to make it quite clear. There is only one sacrifice that God wants as a pre-requisite to forgiveness. That is the admission that we have no sacrifice worthy to bring - that we are totally spiritually bankrupt.