Shofetim 3:1-2

Orthodox Jewish Bible

3 Now these are the Goyim which Hashem let remain, to test Yisroel by them, even as many of Yisroel who had not known all the milchamot Kena’an;

² Only so that the dorot of the Bnei Yisroel might have da’as, to teach them milchamah, such as before knew nothing thereof;