Your sin is not the disqualification. Your refusal to repent is.
The strongest men in scripture weren't the sinless ones. They were the ones who fell and did not stay down.
David: adultery, a murder ordered from a throne, a dead son. And the psalm he wrote on his face: "The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise."
Peter: three denials in one night. "And Peter went out, and wept bitterly." Fifty days later he stood in the same city and preached the sermon that saved three thousand.
Paul: dragged Christians to prison and death. "Christ Jesus came into the world to save sinners; of whom I am chief."
"But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us."
God is not collecting monuments. He's raising men who get on their face, get clean, and get back in the fight.