If Jesus Christ is merely a man and not God, the apostle Paul would not have said,

Paul, an apostle - not from men nor through man, but through Jesus Christ. (Galatians 1:1)

If Jesus Christ is merely God and not a man, Paul would not have said,

For there is one God, and there is one mediator between God and men, the man Christ Jesus. (1 Timothy 2:5)

If Jesus Christ is merely an angel and not God, God the Father would not have said to Him,

Your throne, O God, is forever and ever. (Hebrews 1:8)

If Jesus Christ is not equal with God the Father, the Father would not have said of Him,

Let all God's angels worship Him. (Hebrews 1:6)

But because Jesus Christ is fully God and fully man, the apostle John said,

...the Word was God...the Word became flesh and dwelt among us. (John 1:1, 14)