The greatest witness to Paul of the great power of the gospel is its claim on his own heart. When he was Christ’s enemy, God called him. When there was no desire to seek Jesus, the Savior made this Pharisee of the Jews an apostle of Jesus. Paul has been transferred from one universe to another, and it is plain to him that this was not and could not be his own doing but, rather, the sovereign work of God.
– Bryan Chapell