In 1 Cor 1:24, Paul calls Christ 'the power of God' — the same concept of divine power contrasted with mere words in 4:20.

In 1 Corinthians 2:4, Paul contrasts persuasive words with a demonstration of the Spirit's power — directly echoing the talk-vs-power theme of the kingdom.

In Romans 1:16, the gospel is described as the power of God for salvation — showing that the kingdom's power is rooted in the gospel's saving might.

In Romans 14:17, Paul defines the kingdom of God by righteousness, peace, and joy — another 'not X but Y' statement about its true nature.

In 2 Corinthians 10:4, spiritual weapons have divine power to demolish strongholds — aligning with the kingdom's power being not talk but divine might.

In 1 Thessalonians 1:5, the gospel came with power and the Holy Spirit, not just words — directly reinforcing the same contrast.

In 2 Corinthians 10:11, Paul insists his actions will match his letters — reinforcing that kingdom reality is shown in deeds, not mere talk.