I do not think that poster can say, "My Lord and my God!" because he does not believe that.

Maybe.. he is a brother in error. I hope so because otherwise .. well, I'd rather not say.

These verses (plus many more) reveal the DEITY of Jesus Christ.

Titus 2:13 Looking for the Blessed Hope and glorious appearing of our great God and Savior, Jesus Christ.

John 1:1-3 (THE WORD was God and was made flesh)
John 14 "He who has see ME has seen the Father."

2Peter 1:1 "To those who have obtained like precious faith with us by righteousness of our God and Savior, Jesus Christ."
1Tim 3:16 ... " God was manifested in the flesh.."
Phil 2:5-7
etc, etc, etc.

Jesus is;
Fullness of the Godhead bodily
Alpha & Omega & The Almighty
Jesus is I AM
Jesus is LORD and GOD.
Immanuel - God with us
etc. etc. etc.

That poster missed these verses.
There is time to course-correct.
Not much time.. but hopefully enough time for him to reflect and pray.