Joshua 4:12 And the children of Reuben, and the children of Gad, and half the tribe of Manasseh, passed over armed before the children of Israel, as Moses spake unto them: 13 About forty thousand prepared for war passed over before the Lord unto battle, to the plains of Jericho.
[Patriarchs & Prophets pp 517>518] The obligation had been faithfully discharged. When the ten tribes entered Canaan forty thousand of “the children of Reuben, and the children of Gad, and half the tribe of Manasseh ... prepared for war passed over before the Lord unto battle, to the plains of Jericho.” Joshua 4:12, 13. For years they had fought bravely by the side of their brethren. Now the time had come for them to get unto the land of their possession. As they had united with their brethren in the conflicts, so they had shared the spoils.
And they returned “with much riches ... and with very much cattle, with silver, and with gold, and with brass, and with iron, and with very much raiment,” all of which they were to share with those who had remained with the families and flocks. They were now to dwell at a distance from the sanctuary of the Lord, and it was with an anxious heart that Joshua witnessed their departure, knowing how strong would be the temptations, in their isolated and wandering life, to fall into the customs of the heathen tribes that dwelt upon their borders.
While the minds of Joshua and other leaders were still oppressed with anxious forebodings, strange tidings reached them. Beside the Jordan, near the place of Israel's miraculous passage of the river, the two and a half tribes had erected a great altar, similar to the altar of burnt offering at Shiloh. The law of God prohibited, on pain of death, the establishment of another worship than that at the sanctuary. If such was the object of this altar, it would, if permitted to remain, lead the people away from the true faith.
Joshua 22:10 And when they came unto the borders of Jordan, that are in the land of Canaan, the children of Reuben and the children of Gad and the half tribe of Manasseh built there an altar by Jordan, a great altar to see to.
May The Lord add His blessing to the study of His word. God bless!