Joshua 4:9

9And Joshua set up
Or  Joshua had set up
twelve stones in the midst of the Jordan, bin the place where the feet of the priests bearing the ark of the covenant had stood; and they are there to this day.

Joshua 7:26

26And they raised over him ca great heap of stones that remains to this day. Then dthe Lord turned from his burning anger. Therefore, to this day the name of that place is called the Valley of Achor.
 Achor means trouble


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