“This is the message we have heard from him and proclaim to you, that God is light, and in him is no darkness at all. If we say we have fellowship with him while we walk in darkness, we lie and do not practice the truth. But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin. 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.” – 1 John 1:5-10
Christianity that is real and what John speaks of in the scriptures sited is all about dealing with our inadequacy before God. It is in acknowledging our inadequacy that we truly find our adequacy in Christ. Christ doesn’t want us to say “Lord, never shall You wash my feet!”, for that reveals a heart full of pride and arrogance and presumes we “have no sin”. He wants us to say, “wash me, Jesus, and I shall be whiter than snow”, because we always have, and fall into, sin.
“Such confidence we have through Christ toward God. Not that we are adequate in ourselves to consider anything as coming from ourselves, but our adequacy is from God, who also made us adequate as servants of a new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life.” – 2 Corinthians 3:4-6
“Purge me with hyssop, and I shall be clean; wash me, and I shall be whiter than snow.” – Psalm 51:7