I think your confusion has to do with a misunderstanding of the Godhead. The Godhead is composed of two persons, the father and the son. They are real, spirit beings with a form that we can't discern, but real forms nonetheless.
When the son incarnated, he gave up his spirit body and became flesh and blood.
Php 2:7 But made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:
Php 2:8 And being found in fashion as a man, he humbled himself, and became obedient unto death, even the death of the cross.
The thing that most of Christianity doesn't understand is that man is NOT created with an eternal soul. We really truly die when we die.
Joh 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
The choice is "perish", die, or eternal life. We don't have an immortal soul. We RECEIVE eternal life through faith in Christ.
So when Christ became flesh, he really truly died on the cross. God, the father and son, bet the farm that when the son came to earth that he would not sin. If he HAD, he would still be dead.
He earned the right to eternal life because he did not sin, did not break any of God's laws:
Mar 10:17 And when he was gone forth into the way, there came one running, and kneeled to him, and asked him, Good Master, what shall I do that I may inherit eternal life?
Mar 10:18 And Jesus said unto him, Why callest thou me good? there is none good but one, that is, God.
Mar 10:19 Thou knowest the commandments, Do not commit adultery, Do not kill, Do not steal, Do not bear false witness, Defraud not, Honor thy father and mother.
We however can't keep these perfectly, but since Christ did we can gain life by his sacrifice.
Jesus was completely human with the spirit of God dwelling in him. He, at any time, could have done his own human will and thus have sinned and thus could have died forever.
The Godhead is composed of three Persons - Father, Son, and Holy Ghost.
Well, see, that’s the problem.
G-d is not made up of different parts. G-d is G-d. Remember what G-d said to Moses, after all.
Anything that contradicts that is, therefore, patently false.
***The thing that most of Christianity doesn’t understand is that man is NOT created with an eternal soul. We really truly die when we die.***
***The choice is “perish”, die, or eternal life. We don’t have an immortal soul. We RECEIVE eternal life through faith in Christ.***
Your two statements above are absolutely correct as far as I can tell from the Bible. Congratulations.