Jamieson, Fausset and Brown on 1 Corinthians 8:6

6. to us--believers.

of whom--from whom as Creator all things derive their existence.

we in him--rather, "we for Him," or "unto Him." God the Father is the end for whom and for whose glory believers live. In Col 1:16 all things are said to be created (not only "by" Christ, but also) "for Him" (Christ). So entirely are the Father and Son one (compare Ro 11:36; He 2:10).

one Lord--contrasted with the "many lords" of heathendom (1Co 8:5).

by whom--(Joh 1:3; He 1:2).

we by him--as all things are "of" the Father by creation, so they (we believers especially) are restored to Him by the new creation (Col 1:20; Re 21:5). Also, as all things are by Christ by creation, so they (we especially) are restored by Him by the new creation.