Contradiction with Matthew 11:25
This verse suggests that the mysteries of God were hidden from the wise and prudent, but Acts 22:15 says Paul will be a witness to all men.
Matthew 11:25: At that time Jesus answered and said, I thank thee, O Father, Lord of heaven and earth, because thou hast hid these things from the wise and prudent, and hast revealed them unto babes.
Contradiction with John 9:39
This verse implies that Jesus came to give spiritual sight to those who are blind and blind those who think they see, contradicting the notion of witnessing to all men in Acts 22:15.
John 9:39: And Jesus said, For judgment I am come into this world, that they which see not might see; and that they which see might be made blind.
Contradiction with Romans 11:8
This verse states that God has given some a spirit of slumber, eyes that should not see, and ears that should not hear, contradicting the universal witnessing in Acts 22:15.
Romans 11:8: (According as it is written, God hath given them the spirit of slumber, eyes that they should not see, and ears that they should not hear;) unto this day. [slumber: or, remorse]
Contradiction with 2 Corinthians 4:3-4
This passage suggests that the gospel is hidden to those who are lost because the god of this world has blinded their minds, which contradicts being a witness to all men as stated in Acts 22:15.
2 Corinthians 4:3-4: But if our gospel be hid, it is hid to them that are lost:
Contradiction with 1 Corinthians 2:14
This verse says that the natural man cannot receive the things of the Spirit of God, for they are foolishness to him, contradicting the idea of Paul being a witness to all men in Acts 22:15.
1 Corinthians 2:14: But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.