[1:5] 1 sn Made rich refers to how God richly blessed the Corinthians with an abundance of spiritual gifts (cf. v. 7).
[1:5] 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.
[1:7] 3 sn The revelation of our Lord Jesus Christ refers to the Lord’s return, when he will be revealed (cf. the reference to the day of our Lord Jesus Christ in v. 8).