If ye have heard of the dispensation of the grace of God which is given me to you-ward:
(If - not doubt х ei-ge (G1489), 'if indeed']: 'assuming (what I know to be the fact, namely) that ye have heard,' etc. The indicative (Greek) implies: 'seeing that doubtless,' etc. He delicately reminds them of their having heard from himself, and probably from others, the fact (Ephesians 4:21: see 'Introduction.' These words do not disprove Paul's a personal acquaintance with his readers, or the address of this letter to the Ephesians (cf. Acts 20:17-24).
The dispensation - `the office of dispensing, as a steward, the grace of God which was (not "is") given me to you-ward'; namely, to dispense to you. Ellicott, 'the dispensation in respect to the grace of God' (the qualifying grace of God for fulfilling my apostleship, Ephesians 1:10; Colossians 1:25).