The sins of the unbeliever against the Holy Spirit: Resisting
Acts 7:51 says, “You men who are stiff-necked and uncircumcised in heart and ears are always resisting the Holy Spirit.”
Stephen’s indictment works from the inside out. The Jews are stiff-necked, unwilling to bow to the repeated work of the Spirit. Their resistance is not to human beings but to God the Holy Spirit (Isaiah 63:9-10). The Spirit had clearly, repeatedly demonstrated the deity of Jesus the Messiah through miracles, fulfilled prophecy and the authority that the Father had given Him.
John 10:25 — Jesus answered, “I did tell you, but you do not believe. The miracles I do in my Father’s name speak for me . . . John 10:38 — even though you do not believe me, believe the miracles, that you may know and understand that the Father is in me, and I in the Father.
Luke 24:44 — He said to them, “This is what I told you while I was still with you: Everything must be fulfilled that is written about me in the Law of Moses, the Prophets and the Psalms.”
Luke 4:36 — All the people were amazed and said to each other, “What is this teaching? With authority and power he gives orders to evil spirits and they come out!”
Too smart to believe in God
Though bearing the outward sign of the covenant they were not the people of God, they were uncircumcised in their hearts (Lev. 26:41; Jer. 9:26). In their disposition toward God they did not differ from pagans, they had ears that spiritually did not hear. This unrepentant, unregenerate condition is the same as that of their fathers (Acts 7:39).
The unbelieving heart can and does resist the Holy Spirit. Is it not true of our society? We have become too smart to believe in God, the religious symbols of our humanist religion is the mortar board and the sheep skin.