Paul, in dealing with the Corinthians, addresses Christians who were unwilling to enduring suffering by presenting a striking contrast between himself and the Corinthian church.
Jesus said in John 16:33, “Take heart!” The sheep of His pasture only worry and fear when we are giving attention to the enemy that should be fixed by faith on God.
Teaching that doesn’t line up with Christ and the apostles has no value for the church. Timothy was to identify false teaching and expose false teachers