Joshua 23:10-12

Young's Literal Translation

¹⁰ one man of you doth pursue a thousand, for Jehovah your God [is] He who is fighting for you, as He hath spoken to you;

¹¹ and ye have been very watchful for yourselves to love Jehovah your God.

¹² `But -- if ye at all turn back and have cleaved to the remnant of these nations, these who are left with you, and intermarried with them, and gone in to them, and they to you,