Passage
For whatever promises of God [there are], in him is the yea, and in him the amen, for glory to God by us.
For whatever promises of God [there are], in him is the yea, and in him the amen, for glory to God by us.
2 Corinthians 1:18 Now God [is] faithful, that our word to you is not yea and nay.
2 Corinthians 1:19 For the Son of God, Jesus Christ, he who has been preached by us among you (by me and Silvanus and Timotheus), did not become yea and nay, but yea *is* in him.
2 Corinthians 1:20 For whatever promises of God [there are], in him is the yea, and in him the amen, for glory to God by us.
2 Corinthians 1:21 Now he that establishes us with you in Christ, and has anointed us, [is] God,
2 Corinthians 1:22 who also has sealed us, and given the earnest of the Spirit in our hearts.
The verse centers on "whatever", "promises", "amen", and "glory". It is saying that the verse draws attention to "whatever" and "promises", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 19's "For the Son of God Jesus Christ..." into verse 21's "Now he that establishes us with you...", so "whatever" and "promises" belong inside that flow. In 2 Corinthians context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "whatever" and "promises" with trust shaped by these words, not by a vague optimism outside the passage.