Jamieson, Fausset and Brown on Ephesians 3:8

8. am--Not merely was I in times past, but I still am the least worthy of so high an office (compare 1Ti 1:15, end).

least of all saints--not merely "of all apostles" (1Co 15:9, 10).

is--Greek, "has been given."

among--omitted in the oldest manuscripts Translate, "to announce to the Gentiles the glad tidings of the unsearchable (Job 5:9) riches," namely, of Christ's grace (Ep 1:7; 2:7). Ro 11:33, "unsearchable" as a mine inexhaustible, whose treasures can never be fully explored (Ep 3:18, 19).