It was God [personally present] in Christ, reconciling and restoring the world to favor with Himself, not counting up and holding against [men] their trespasses [but cancelling them], and committing to us the message of reconciliation (of the restoration to favor). 2 Corinthians 5:19 (AMPC)
There’s no longer a sin obstacle between God and man because God has condemned sin in the body of Christ. Romans 8:3
There’s no longer a sinner problem because God personally present in Christ reconciled the world (which includes all sinners) to Himself.
There’s only a sin consciousness challenge.
The sinners haven’t yet known that they don’t have to continue under sin’s control, that sin has been rendered powerless in the death and resurrection of Jesus Christ.
Then even those who have received the free gift of Righteousness by believing and receiving the Lamb that took away the sin of the world have not yet been fully persuaded of and established in Righteousness- they still see themselves as sinners because they focus more on what they do instead of on what God in Christ has done in them.
But thanks to God who has given us the ministry of reconciliation and committed to us the Word of reconciliation. To show and tell all men how God personally present in Christ has brought man into right relationship and fellowship with Him.