A.T. Robertson Commentary Ephesians 3:12

"in whom we have boldness and access in confidence through our faith in him." — Ephesians 3:12 (ASV)

In confidence (εν πεποιθησε). Late and rare word from πεποιθα. See 2 Corinthians 1:15.

Through our faith in him (δια της πιστεως αυτου). Clearly objective genitive αυτου (in him).