"If we say we have no sin, we deceive ourselves, and the truth is not in us. If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. If we say we have not sinned, we make him a liar, and his word is not in us."
The way I see it, we have three choices:
1. We can choose to be false (v. 8 - "we deceive ourselves, and the truth is not in us")
2. We can choose to be forgiven (v. 9 - "he is faithful and just to forgive us our sins")
3. We can choose to be foolish (v. 10 - "we make him a liar...")
Options 1 and 3 are the result of the denial of sin in our lives. This would be the height of pride and arrogance and self-exaltation.
Option 2 is the result of God-given repentance and faith that leads to acknowledgement and confession of sin. This is the essence of humility and faith.
Father, forgive us for deceiving ourselves and making you a liar by trying to conceal our sin in these dark hearts. Truly, these hearts are deceitful above all things. Shine the light of your Word into the darkest crevices and uproot "all unrighteousness."