What qualifications should a preacher meet?

If a man in the fellowship of an assembly has previously been put away on several occasions for fornication, should he be permitted to preach the Gospel or minister the Word in assembly meetings?

1 Timothy 3:8-12 gives us the qualifications for deacons, men who serve the Lord in an assembly. The primary service of deacons (servants) is spiritual, that is, ministering the Word of God to believers and preaching the Gospel to sinners. Verse 10 clearly states that they must first be proved; "then let them minister being found blameless" (Newberry margin). The Scripture therefore clearly disqualifies a Christian man in an assembly from preaching the Gospel to sinners or ministering the Word to believers, if he has been guilty of repeated moral sins.

A. Joyce