Numbers 5:3

5:3 You must expel both men and women; you must put them outside the camp, so that ¹  they will not defile their camps, among which I live.”

[5:3]  ¹ tn The imperfect tense functions here as a final imperfect, expressing the purpose of putting such folks outside the camp. The two preceding imperfects (repeated for emphasis) are taken here as instruction or legislation.