How could God sin? I didn't even
want to put the question mark in.
He could have, but he didn’t.
Is God a liar?
The answer must be yes in regards to the humanity of Jesus Christ, but since he always remained obedient in His relationship to God the Father, He demonstrated how we are to walk.
Christ didn’t perform human good, rather He performed His life in submission to the volition to the Plan of God the Father, which is righteous and just.
As the second Adam, Jesus Christ was also the second man ever lived who was born with a pure human spirit. Only He was able to provide the Perfect Sacrifice on the Cross, redeeming the sins of all mankind, past, present, and future, when they were imputed to Him. His spiritual death on the Cross, paid for the unlimited substitutionary atonement (covering) for all sin, redeeming all from the slavemarket of sin, propitiating God’s wrath on sinners, reconciling man to God the Father, being judged for all sin, thereby allowing us to face God and confess our sin through faith in Christ,.... to be recognized as something righteous, which God is now free to immediately give us eternal life, by His grace and remain perfectly Holy with respect to His Integrity, demanding perfect Justice and Righteousness whenever exposed to anything unrighteous or unjust.
Could Jesus star in a movie today about his own life?
We can speculate forever about things that never will or did happen.
I suppose He could if He wanted to; but the 'REAL' question here is about MARY; isn't it!?