By Theodore Epp
David asked God to create in him a clean heart (see Ps. 51:10). With regard to the unbeliever, this would be a matter of regeneration, but for the Christian it involves renewal and restoration.
David said, "Cast me not away from thy presence; and take not thy holy spirit from me" (v. 11).
This is Old Testament doctrine and has to do with the fact that when a person had the Spirit of God and was disobedient, the Holy Spirit might leave him as He left Saul. David did not want this to happen to him.
In this Church Age the Spirit of God comes into the believer's life to stay. Nevertheless, many Christians, some of them Christian workers, have been put on the shelf and are useless to God because of some sin that they have allowed to control, or dominate, their lives.
Our position before God in Christ is assured, but our condition, or experience, if it is to be victorious, must be one of living in fellowship with the Lord.
Then the grace of God comes into full view as we see David saying, "Then will I teach transgressors thy ways; and sinners shall be converted unto thee" (v. 13).
Once the individual has been restored to fellowship, then, by the grace of God, he can effectively share the Gospel with others.
"If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness" (1 John 1:9).