Reference

Judges 20:18

And the children of Israel arose, and went up to the house of God, and asked counsel of God, and said, Which of us shall go up first to the battle against the children of Benjamin? And the Lord said, Judah shall go up first.
16

Among all this people there were seven hundred chosen men lefthanded; every one could sling stones at an hair breadth, and not miss.

17

And the men of Israel, beside Benjamin, were numbered four hundred thousand men that drew sword: all these were men of war.

18

And the children of Israel arose, and went up to the house of God, and asked counsel of God, and said, Which of us shall go up first to the battle against the children of Benjamin? And the Lord said, Judah shall go up first.

19

And the children of Israel rose up in the morning, and encamped against Gibeah.

20

And the men of Israel went out to battle against Benjamin; and the men of Israel put themselves in array to fight against them at Gibeah.

Counter-Arguments

The strongest case that this verse does not belong in this theme.

Israel-Specific Promises

The verse describes an immediate tactical decision for a specific battle, not a promise or prophecy about the long-term destiny or covenantal relationship of Israel as a whole. The instruction for Judah to go first is a command for a particular event, not a general promise to the nation.