Jesus was a man of flesh, he was Mary's son. He had to have come from an egg in her ovary as he was born of the seed (genetics) of David, Abraham and by extension Adam. God somehow kick started that egg into life. Within that human embryo dwelt a Spiritual Being, The eternal Son who was in union with the human being. I think most people say "He was fully God and fully man." Well, this explains how that could be. But I prefer humanity and divinity combined.
The Father initiated the life in that egg, so clearly his father was God as all true believers are. And yet he was born of flesh and blood
Hebrews 2:14 "Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil;"
When sin entered in, God gave the human race the Gift of enmity against Satan. prior to that moment we had an enmity towards God and Satan was the source of that hatred. God had to tip the scales in our favor so He gave us His Son who was the source of our enmity against Satan, for only God can have a hatred of evil without being contaminated by it.
Have you ever felt hatred? It is an ugly thing which contaminates you from within and it comes from the flesh. So God provided His son to give us a divine resistance or enmity against the sophistry of Satan.
I hope this helps