Who was Jesus? Was he God? Was he God's messenger/prophet sent to expose hypocrisy and proclaim the truth? Exactly who was he, and did he intend to establish a religion that unseated the chosen? I am Unitarian in belief to the extent that I believe there is only one God. As far as the sign of the cross, it seems to me another pointless exercise or ritual.
1 John 5:7
For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are One.
As far as we know this side of Heaven, we serve a Tripartite God. Jesus is the Word but also in John 1 (the Gospel not to be confused with 1 John) He created everything that was created. All in all God is One Who is in 3 forms. He is Omnipresent, Omnipotent and Omniscient.