The kingdom of God is not a matter of talk.

The kingdom of God is not a matter of talk (1 Cor. 4:20).

Here, "talk" refer to "the talk of arrogant people" (v. 19).

To put it differently, "talk" refer to speech that arises from a proud heart (v. 6).

To elaborate further, "talk" denote the words of wisdom

that arrogant individuals consider within themselves (2:4, 5).

The kingdom of God is not based on such talk (4:20).

The kingdom of God is solely based on power (4:20).

Here, "power" refers to the power of God (2:5).

This power of God is the power of the message of the cross (1:18)

(the power of the Gospel) (Rom. 1:16).

This power of God is Christ (1 Cor. 1:24).

This power of God includes the demonstration of the Spirit (2:4).