i.e. Before the ark or tabernacle, that God may be witness, and judge, and author of the division, that each may be contented with his lot, and that your several possessions may be secured to you as things sacred, and not to be alienated.
Related Commentaries of Joshua 18:6
Joshua 18:6
6 Ye shall therefore describe the land into seven parts, and bring the description hither to me, that I may cast lots for you here before the LORD our God.