What does 'manifold grace of God' mean?

Answer 1

The Greek word translated "manifold" (poikilos) means "of various colors or sorts." Thus, "manifold grace of God" (a phrase which appears only in 1 Peter 4:10) means that His grace is demonstrated in numerous different ways.

Answer 2

It is Christ the manifold wisdom of God.

But to them which are called, both Jews and Greeks, Christ the power of God, and the wisdom of God.

1 Corinthians 1:24

American King James Version (AKJV)

To the intent that now to the principalities and powers in heavenly places might be known by the church the manifold wisdom of God,

Ephesians 3:10

American King James Version (AKJV)