I agree!
So also, Christ did not glorify Himself to be made a high priest, but He who said to Him, "You are my Son, today have I begotten you,"
Hebrews 5:5
And again, "I will be to him a Father, and He shall be to Me a Son."
The only One to glorify Christ was God. Christ will sit on the right hand of God. Therefore, they are two identities. You can't begat yourself.