Jamieson, Fausset and Brown on 1 Corinthians 1:30

30. But ... ye--in contrast to them that "glory" in worldly wisdom and greatness.

of him are--not of yourselves (Ep 2:8), but of Him (Ro 11:36). From Him ye are (that is, have spiritual life, who once were spiritually among the "things which are not." 1Co 1:28).

in Christ--by living union with Him. Not "in the flesh" (1Co 1:26, 29).

of God--from God; emanating from Him and sent by Him.

is made unto us--has been made to us, to our eternal gain.

wisdom--unattainable by the worldly mode of seeking it (1Co 1:19, 20; contrast Col 2:3; Pr 8:1-36; Is 9:6). By it we become "wise unto salvation," owing to His wisdom in originating and executing the plan, whereas once we were "fools."

righteousness--the ground of our justification (Jr 23:5, 6; Ro 4:25; 2Co 5:21); whereas once we were "weak" (Ro 5:6). Is 42:21; 45:24.

sanctification--by His Spirit; whereas formerly we were "base." Hereafter our righteousness and sanctification alike shall be both perfect and inherent. Now the righteousness wherewith we are justified is perfect, but not inherent; that wherewith we are sanctified is inherent, but not perfect [Hooker]. Now sanctification is perfect in principle, but not in attainment. These two are joined in the Greek as forming essentially but one thing, as distinguished from the "wisdom" in devising and executing the plan for us ("abounded toward us in all wisdom," Ep 1:8), and "redemption," the final completion of the scheme in the deliverance of the body (the position of "redemption" last shows that this limited sense is the one intended here). Lu 21:28; Ro 8:23; Ep 1:14; 4:30.

redemption--whereas once we were "despised."