Reference

Joshua 22:13

And the children of Israel sent unto the children of Reuben, and to the children of Gad, and to the half tribe of Manasseh, into the land of Gilead, Phinehas the son of Eleazar the priest,
11

And the children of Israel heard say, Behold, the children of Reuben and the children of Gad and the half tribe of Manasseh have built an altar over against the land of Canaan, in the borders of Jordan, at the passage of the children of Israel.

12

And when the children of Israel heard of it, the whole congregation of the children of Israel gathered themselves together at Shiloh, to go up to war against them.

13

And the children of Israel sent unto the children of Reuben, and to the children of Gad, and to the half tribe of Manasseh, into the land of Gilead, Phinehas the son of Eleazar the priest,

14

And with him ten princes, of each chief house a prince throughout all the tribes of Israel; and each one was an head of the house of their fathers among the thousands of Israel.

15

And they came unto the children of Reuben, and to the children of Gad, and to the half tribe of Manasseh, unto the land of Gilead, and they spake with them, saying,

Counter-Arguments

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

Israel-Specific Promises

This verse describes an action taken by the Israelites (sending Phinehas) to other Israelite tribes; it does not contain any promises, prophecies, or covenants directed at Israel.

Christ as High Priest

This verse simply describes a historical event involving a specific Levitical priest, Phinehas, being sent to other tribes. It contains no mention of a high priest, a future messianic figure, or any concepts related to mediation, intercession, or sacrifice that would connect it to the theme of Christ as High Priest.