Charles Ellicott Commentary Galatians 3:9

"So then they that are of faith are blessed with the faithful Abraham." — Galatians 3:9 (ASV)

They which be of faith.—The same phrase as in Galatians 3:7 above.

With faithful Abraham—i.e., in company with Abraham. The same idea is presented in two different forms. Abraham’s spiritual descendants are blessed “in him;” they are also blessed “with him.” He is the head of a great company, in which they all are included.