1 Corinthians 1:9
God is faithful (pistov o qeov). This is the ground of Paul's confidence as he loves to say (I Thessalonians 5:24; I Corinthians 10:13; Romans 8:36; Philippians 1:16). God will do what he has promised.
Through whom (di ou). God is the agent (di) of their call as in Romans 11:36 and also the ground or reason for their call (di on) in Hebrews 2:10.
Into the fellowship (eiv koinwnian). Old word from koinwnov, partner for partnership, participation as here and II Corinthians 13:13 f.; Philippians 2:1; Philippians 3:10. Then it means fellowship or intimacy as in Acts 2:42; Galatians 2:9; II Corinthians 6:14; I John 1:3, I John 1:7. And particularly as shown by contribution as in II Corinthians 8:4; II Corinthians 9:13; Philippians 1:5. It is high fellowship with Christ both here and hereafter.
