Wash me thoroughly from my iniquity, and cleanse me from my sin.
Bodily, life can be a dirty business. You go outside, you work at what you have to do, and you get dirty. There doesn’t seem to be any way around it. You get dirty and you need to be washed. Since getting dirty happens, and since staying dirty is unacceptable, washing is an unavoidable part of life. You have to accept the fact that your body will need to be washed on a regular basis.
In this psalm, David uses the metaphor of washing to speak of getting clean from the filth of sin.
How do you get your soul washed? God has to do it. He does it in at least two ways.
First, He does it when you put 1 John 1:9 into practice: “If we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness.” Confession is good for the soul, because God washes it when you confess your sin. That’s why David confessed his sin in Psalm 51 and prayed our verse for today.
Second, He does it when you read the Bible. Ephesians 5:26 tells us that Jesus Christ loved the church and gave Himself for her so that “He might sanctify and cleanse her with the washing of water by the word.” Reading biblical truth washes your soul of the false and evil thoughts it contains. Jesus said, “Sanctify them by Your truth. Your word is truth” (John 17:17).
You wash your body on a regular basis. Why not have your soul washed on a regular basis as well?