Any passage that shows the Messiah, the Son, to be equal to the Father is a Unitarian problem.
John 5:18: 'Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God.'
What's also interesting is that both angels and demons recognise Jesus Christ as the Holy One, the 'faithful one'.
Luke 1:35: 'And the angel answered and said unto her [Mary], The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.'
Luke 4:33,34: 'And in the synagogue there was a man, which had a spirit of an unclean devil, and cried out in a loud voice,
Saying, Let us alone; what have we to do with thee, thou Jesus of Nazareth? art thou come to destroy us? I know thee who thou art; the Holy One of God.'