Scripture teaches that Jesus was fully human, with a physical body like ours. This He received from Mary (Luke 1:30,35). At the same time, Jesus was fully God, with an eternal, sinless nature (John 1:14; 1 Timothy 3:16; Hebrews 2:14-17.) If He was not born sinless then Jesus was in no position to save anyone from the consequences of their sin.
The Virgin Birth circumvented the transmission of the sin nature and allowed the eternal God to become a perfect man and thus be able to pay in full the price for our sin so that we can be declared not guilty before a holy God. Christmas was all about giving us the greatest gift in this life- eternal life. •