Since this is the core of the deceit, please provide Scriptural evidence of this blaspehmy.
"As it is written, There is none righteous, no, not one." -- Romans 3:10
"But the Scripture hath concluded all under sin..." -- Galatians 3:22
"Wherefore, as by one man sin entered into the world, and death by sin, and so death passed upon all men, for that all have sinned." -- Romans 5:12"For all have sinned, and come short of the glory of God" -- Romans 3:23
Read your Bible.
By the way, Christ was born God and man, yet surely you do not include Him in that “all have sinned.”
So it is possible He could do whatever He wanted, despite what He would later write in the New Testament.