Charles Spurgeon Commentary 1 Corinthians 1:4-9

"I thank my God always concerning you, for the grace of God which was given you in Christ Jesus; that in everything ye were enriched in him, in all utterance and all knowledge; even as the testimony of Christ was confirmed in you: so that ye come behind in no gift; waiting for the revelation of our Lord Jesus Christ; who shall also confirm you unto the end, [that ye be] unreproveable in the day of our Lord Jesus Christ. God is faithful, through whom ye were called into the fellowship of his Son Jesus Christ our Lord." — 1 Corinthians 1:4-9 (ASV)

I thank my God always on your behalf, for the grace of God which is given you by Jesus Christ; that in every thing you are enriched by him, in all utterance, and in all knowledge; even as the testimony of Christ was confirmed in you: so that you come behind in no gift; waiting for the coming of our Lord Jesus Christ: who shall also confirm you to the end, that you may be blameless in the day of our Lord Jesus Christ. God is faithful, by whom you were called to the fellowship of his Son Jesus Christ our Lord.

Paul was going to blame them for some things that were not right, but he began by commending whatever good was in them by God's grace.