You're not getting it. The soul could die. That is to say life ends. It could be old age, it could be a mauling by a grizzly bear, it could be any death. It doesn't have to be God.
Leviticus 17:11 “For the soul of the flesh is in the blood, and I myself have put it upon the altar for you to make atonement for your souls, because it is the blood that makes atonement by the soul in it.”
Leviticus 17:14 “The soul of every sort of flesh is its blood.”
Genesis 19:19-20: Please, now, your servant has found favor in your eyes so that you are magnifying your loving-kindness, which you have exercised with me to preserve my soul alive, but I - I am not able to escape to the mountainous region for fear calamity may keep close to me and I certainly die. Please, now, this city is nearby to flee there and it is a small thing. May I, please, escape there - is it not a small thing? - and my soul will live on.”
Numbers 23:10; "Who has numbered the dust particles of Jacob,
And who has counted the fourth part of Israel?
Let my soul die the death of the upright ones,
And let my end turn out afterward like theirs.”
Joshua 2:13-14; "And you must preserve alive my father and my mother and my brothers and my sisters and all who belong to them, and you must deliver our souls from death.”
At that the men said to her: “Our souls are to die instead of you people! If you will not tell about this matter of ours, it must also occur that when Jehovah gives us the land, we also shall certainly exercise loving-kindness and trustworthiness toward you.”
Judges 5:18; "Zeb′u·lun was a people that scorned their souls to the point of death;
Naph′ta·li also, on the heights of the field."
Judges 16:16; "And it came about that because she pressured him with her words all the time and kept urging him, his soul got to be impatient to the point of dying."
Judges 16:30; "And Samson proceeded to say: “Let my soul die with the Philistines.” Then he bent himself with power, and the house went falling upon the axis lords and upon all the people that were in it, so that the dead that he put to death in his own death came to be more than those he had put to death during his lifetime."
1 Kings 20:31-32; "So his servants said to him: “Here, now, we have heard that the kings of the house of Israel are kings of loving-kindness. Please, let us carry sackcloth upon our loins and ropes upon our heads, and let us go out to the king of Israel. Perhaps he will preserve your soul alive.” Accordingly they girded sackcloth about their loins, with ropes upon their heads, and came in to the king of Israel and said: “Your servant Ben-ha′dad has said, ‘Please, let my soul live.’” To this he said: “Is he still alive? He is my brother.”
OK, so the people that wrote the OT thought the soul could die. They identified the soul with the living body.
Again, so what?
We know we can die. If that's all they are saying, it is a triviality.