Joshua 22:19
Notwithstanding, if the land of your possession be unclean, then pass ye over unto the land of the possession of the Lord, wherein the Lord’s tabernacle dwelleth, and take possession among us: but rebel not against the Lord, nor rebel against us, in building you an altar beside the altar of the Lord our God.
Cross-reference
Joshua 18:1 records the tabernacle set up at Shiloh, the very location referred to as the land of the Lord's possession here.
Leviticus 18:25-28 explains that the land is defiled by sin and vomits out its inhabitants, directly relating to the concept of unclean land here.
Deuteronomy 12:5 commands worship only at the place God chooses — the central sanctuary principle behind Joshua's rebuke.
Deuteronomy 12:6 lists the offerings to bring to that chosen place, reinforcing the requirement for centralized worship.
Numbers 32:30 records the condition that the eastern tribes must cross over armed — the prior agreement that contextualizes the current dispute.
Exodus 15:17 describes the mountain of God's inheritance where He dwells, corresponding to the land with the tabernacle mentioned here.