“¶ And when they came vnto the borders of Iordan, that are in the land of Canaan, the children of Reuben, and the children of Gad, and the halfe tribe of Manasseh built there an altar by Iordan, a great altar to see to.”
1611 King James Version (KJV)
22:10 Built an altar - About that time when they came to them, they designed it, and as soon as they were got over Jordan, which was in a very little time, they effected and perfected it. They built it, no doubt, on their own side of the water: for how could they build on other men's land, without their consent? And it is said, in the following verse, to be over against the land of Jordan. Nor would there have been cause to suspect that it was designed for sacrifice, if they had not built it among themselves.