Jesus was a (hu)man. At a minimum he was a man. 100% a man, not 50% man. He had everything every man has, an earthly biological body, that housed his soul and spirit. This is what makes a man a man.
“There are heavenly bodies and earthly bodies, but the glory of the heavenly is of one kind, and the glory of the earthly is of another.”
1 Corinthians 15:40
Jesus did not have a heavenly body after incarnation. He would end up with a heavenly body but only after resurrecting.
“what is man that you are mindful of him, and the son of man that you care for him? Yet you have made him (man) a little lower than the heavenly beings and crowned him with glory and honor.”
Humans are a little lower than those who possess heavenly bodies. And yet heavenly bodies beings are capable of sinning.
“For if God did not spare angels when they sinned, but cast them into hell and committed them to chains of gloomy darkness to be kept until the judgment;”
2 Peter 2:4
So if heavenly beings could sin, Jesus being a man could likewise sin. The fact that he didn’t sin, doesn’t prove it was impossible to sin. This seems to be a correlative fallacy.
Take the text that says
“And after fasting forty days and forty nights, he was hungry.”
If he were not hungry there would be no temptation by offering him bread. Evidently satan offered Jesus bread in the most cunning way possible, as a trap. But it wasn’t a trap because he wasn’t hungry, rather precisely because he was hungry this was a temptation.
The text itself says he was tempted
“For we do not have a high priest who is unable to sympathize with our weaknesses, but one who in every respect has been tempted as we are, yet without sin.”
A temptation by definition needs to be tempting. The whole angle seems fallacious, almost to say, ignoring what the Bible says, prove Jesus was capable of sinning. The Bible says he was tempted, that’s sufficient to suggest he was capable of sinning. If he could not sin, there would be no tempting either.
The OP seems to be trying to find a way to prove Jesus was not God, for if Jesus could potentially sin and God does not sin (God will not sin) then Jesus must not be God.
So can God be in a man’s body?
What is God like?
”God is spirit” John 4:24
Does this mean God cannot inhabit a body? Of course He can. He could inhabit a cloud. The difference between Jesus and every other human was His spirit. BUT because He εκενωσεν-ed Himself Philippians 2:7 or in English because He voluntarily nullified (switched off/suppressed) His divine attributes and did not rely on them, He was identical to humans because His suppressed spirit had no additional attributes uncommon to human spirits. So no, that doesn’t mean He stopped being God. He CANNOT stop being God. He can stop being human, or a heavenly bodied being. Sure He can, but the ONLY way for Jesus who is a spirit to stop being God is to cease from existing
And considering that all Creation exists through Him
“‘In him we live and move and have our being”
If Jesus ceases, so does the universe too with Him. It would be sooner that the universe would disappear than for God Jesus to cease. We can only exist if He exists. If He stops existing we no longer exist. If we stop existing He is unaffected.