" Paul prays that the knowledge we have would be of His will. God’s will is not a secret; He has revealed it in His Word. For example, it is God’s desire that a person be saved (1 Tim. 2:4; 2 Pet. 3:9). Once a person is saved, it is God’s will "

― John F. MacArthur Jr. , Colossians and Philemon: New Testament Commentary (MacArthur New Testament Commentary Serie)