Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all,
Ver. 16. It is of faith] Fidei mendica manu.
That it might be by grace] Paul was a great advancer of the grace of God, and abaser of man. For he knew that as wax and water cannot meet together, so neither can Christ and anything else in the work of man's salvation.