Isn't that something?
The Defeat of the Amalekites (BSB)
8 After this, the Amalekites came and attacked the Israelites at Rephidim.
9 So Moses said to Joshua, “Choose some of our men and go out to fight the Amalekites. Tomorrow I will stand on the hilltop with the staff of God in my hand.”
10 Joshua did as Moses had instructed him and fought against the Amalekites, while Moses, Aaron, and Hur went up to the top of the hill.
11 As long as Moses held up his hands, Israel prevailed; but when he lowered them, Amalek prevailed.
12 When Moses’ hands grew heavy, they took a stone and put it under him, and he sat on it. Then Aaron and Hur held his hands up, one on each side, so that his hands remained steady until the sun went down.
13 So Joshua overwhelmed Amalek and his army with the sword.
9 So Moses said to Joshua, “Choose some of our men and go out to fight the Amalekites. Tomorrow I will stand on the hilltop with the staff of God in my hand.”
10 Joshua did as Moses had instructed him and fought against the Amalekites, while Moses, Aaron, and Hur went up to the top of the hill.
11 As long as Moses held up his hands, Israel prevailed; but when he lowered them, Amalek prevailed.
12 When Moses’ hands grew heavy, they took a stone and put it under him, and he sat on it. Then Aaron and Hur held his hands up, one on each side, so that his hands remained steady until the sun went down.
13 So Joshua overwhelmed Amalek and his army with the sword.
Now, what's the real story?
9 Moses said to Joshua, “Pick some troops for us, and go out and do battle with Amalek. Tomorrow I will station myself on the top of the hill, with the rod of God in my hand.”
10 Joshua did as Moses told him and fought with Amalek, while Moses, Aaron, and Hur went up to the top of the hill.
11 Then, whenever Moses held up his hand, Israel prevailed; but whenever he let down his hand, Amalek prevailed.
12 But Moses’ hands grew heavy; so they took a stone and put it under him and he sat on it, while Aaron and Hur, one on each side, supported his hands; thus his hands remained steady until the sun set.
13 And Joshua overwhelmed the people of Amalek with the sword.
10 Joshua did as Moses told him and fought with Amalek, while Moses, Aaron, and Hur went up to the top of the hill.
11 Then, whenever Moses held up his hand, Israel prevailed; but whenever he let down his hand, Amalek prevailed.
12 But Moses’ hands grew heavy; so they took a stone and put it under him and he sat on it, while Aaron and Hur, one on each side, supported his hands; thus his hands remained steady until the sun set.
13 And Joshua overwhelmed the people of Amalek with the sword.
Similar enough, although the hand initially is singular.
Yet go sit down, and ask someone to hold your hand: you will become a Y instead of a T that way. Likely this was the best they could find, but no way that this supports the invention of a cross - yet it is undeniable that they go through great lengths in order to come up with a story about a cross, precisely because there wasn't one.
Nor predicted one, of course