Matthew 12:28
But if I drive out evil spirits by [the power of] the Holy Spirit, then [that is evidence that] the kingdom of God has come into your midst [i.e., by my presence and ministry].
Luke 11:20
But, if I drive out evil spirits by the finger of God [i.e., by God's direct, supernatural intervention], then [that is evidence that] the kingdom of God has come into your midst [i.e., by my presence and ministry].
2 Corinthians 3:3
You people show [i.e., by your conversions] that you are a letter from Christ, delivered by us [i.e., the result of our ministry], not written with ink but with the Holy Spirit of the living God; not on stone tablets [i.e., as in the case with Moses' ministry], but on tablets of the human heart. [See Jer. 31:33; Heb. 8:10].
Hebrews 8:10
For this is the Agreement that I will make with the people of Israel in the coming days, says the Lord: I will put my laws into their minds, and I will also write them on their hearts. And I will be their God and they will be my people.