This is what the Lord says:
“Let not the wise boast of their wisdom
or the strong boast of their strength
or the rich boast of their riches,
but let the one who boasts boast about this:
that they have the understanding to know me,
that I am the Lord, who exercises kindness,
justice and righteousness on earth,
for in these I delight,”
declares the Lord.
God chose the lowly things of this world and the despised things—and the things that are not—to nullify the things that are, so that no one may boast before him. It is because of him that you are in Christ Jesus, who has become for us wisdom from God—that is, our righteousness, holiness and redemption. Therefore, as it is written: “Let the one who boasts boast in the Lord.”[b]
For God’s people, followers of Jesus, there’s one boast and one boast only. It’s in God himself and what God does. Somehow God takes his people into his work by the Holy Spirit, so that we’re actually involved in what God is doing. So we find that we not only are given, but actually participate in God’s goodness.
So our only boast is in God and in God’s work in Jesus who is Lord, and the cross, God’s saving act in Jesus. And in the difference that makes in our lives and the lives of others. In and through Jesus.