Joshua 22:15
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,
Cross-reference
Joshua 22:12 shows the congregation gathering for war; verse 15 continues with the delegation sent to confront them.
Joshua 22:18 continues the speech, specifying the accusation of rebellion and threat of divine anger on the whole congregation.
Leviticus 17:8 commands all sacrifices to be brought to the tabernacle — the Transjordan altar seems to violate this law, prompting the investigation.
Leviticus 17:9 decrees being cut off for sacrificing elsewhere — the same penalty underlies the accusation against the tribes here.
Deuteronomy 12:4-6 gives the law against worshiping at any place but the designated sanctuary — the very law the Transjordan tribes are suspected of violating.
Deuteronomy 12:13 specifically warns against offering burnt offerings at 'any place you see' — reinforcing the central worship rule the tribes are accused of breaking.
Deuteronomy 12:14 commands that offerings be brought only to the place God chooses — the standard by which the Transjordan altar is judged.
Leviticus 26:40 uses the same Hebrew word for 'treachery' (ma'al) found in the accusation of Joshua 22:16, linking the confrontation to the law of confession.
Numbers 5:6 defines 'breaking faith with the Lord'—the very sin the western tribes suspect in the Joshua narrative.