Matthew Poole and continuators on 1 Corinthians 1:4

4 I thank my God always on your behalf, for the grace of God which is given you by Jesus Christ .

Lest his former Salutation should be misapprehended by them, as signifying, that he thought they were without grace, he here cleareth his meaning by blessing God for that Grace, which they had received; but no man hath so much grace, but he is still capable of more, and stands in need of further influences: Therefore as he here blesseth God for the grace of God, which they by Jesus Christ received; so he before prayed for Grace and Peace for them, from God the Father, and from the Lord Iesus Christ. Christ is both the Author and Finisher of our Faith, he giveth both to will and to do. The beginnings, increases, and finishings of Grace are all from him; Grace is indeed from God the Father, but by Iesus Christ; it floweth from him who is Love, but it is through his Well-beloved. No man hath the love of God, but by and through Jesus Christ.

Marginal references: Rom. 1.8.