Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary

Moses first of all blames their want of brotherly feeling: "Shall your brethren go into the war, and ye sit here?" He then calls their attention to the fact, that by their disinclination they would take away the courage and inclination of the other tribes to cross over the Jordan and conquer the land, and would bring the wrath of God upon Israel even more than their fathers who were sent from Kadesh to spy out the land, and who led away the heart of the people into rebellion through their unfavourable account of the inhabitants of Canaan, and brought so severe a judgment upon the congregation. מן את־לב הניא, to hold away the heart, i.e., render a person averse to anything. The Keri תּניאוּן, as in Num 32:9, is unquestionably to be preferred to the Kal תּנוּאוּן, in the Kethib of Num 32:7. - In Num 32:8-13, Moses reminds them of the occurrences described in ch. 13 and 14. On the expression, "wholly followed Jehovah," cf. Num 14:24. The words, "He drove them about in the desert," caused them to wander backwards and forwards in it for forty years, point back to Num 14:33-35.