Beside the fact that God exists and is Creator there is no truth as glorious and magnificent than Oneness. I will define it that the Christ (Yeshua) is both the Everlasting Father and the Begotten Son.
Isaiah 9:6
6 For unto us a child is born , unto us
a son is given : and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor , The mighty God,
The everlasting Father, The Prince of Peace.