The unitarians do not really belong in this thread because they do not have a view of the Trinity.
Romans 1:3-4 notes
concerning his Son, who was descended from David according to the flesh and was declared to be the Son of God in power according to the Spirit of holiness by his resurrection from the dead, Jesus Christ our Lord,
These verses speak first of the recognition of the humanity of Jesus as a descendant of David. The next verse provides the contrast of his divinity that does not exist as mere words but is demonstrated by the power of his resurrection from the dead.
The unitarians have to deny too much of scripture to sneak in their heretical view of Jesus.