1 Corinthians 1:5

For you were made rich ¹  in every way in him, in all your speech and in every kind of knowledge ²  –

Ac 2:4; Ro 11:12; Ro 15:4; 1Co 4:7-10; 1Co 8:11; 1Co 12:8,10; 1Co 13:2,8; 1Co 14:5,6,26; 2Co 4:6; 2Co 8:7; 2Co 9:11; Eph 1:17; Eph 2:7; Eph 3:8; Eph 6:19; Php 1:9; Col 1:9,10; Col 2:3; Col 3:10; Col 4:3,4; Jas 3:13; 2Pe 3:18

¹ sn Made rich refers to how God richly blessed the Corinthians with an abundance of spiritual gifts (cf. v. 7).

² sn Speech and knowledge refer to the spiritual gifts God had blessed them with (as v. 7 confirms). Paul will discuss certain abuses of their gifts in chapters 12-14, but he thanks God for their giftedness.