Numbers 30:9

The rules by which vows were to be legally regulated, so far as their objects and their discharge were concerned, has been already laid down in Lev; but the chapter before us contains instructions with reference to the force of vows and renunciations. These are so far in place in connection with the general rules of sacrifice, that vows related for the most part to the presentation of sacrifices; and even vows of renunciation partook of the character of worship. The instructions in question were addressed (Num 30:1) to "the heads of the tribes," because they entered into the sphere of civil rights, namely, into that of family life.

In this chapter we have a law concerning vows, which had been mentioned in the close of the foregoing chapter. I. Here is a general rule laid down that all vows must be carefully performed (Num 30:1, Num 30:2). II. Some particular exceptions to this rule. 1. That the vows of daughters should not be binding unless allowed by the father (Num 30:3-5). Nor, 2. The vows of wives unless allowed by the husband (Num 30:6, etc.).

30:9 A widow or a divorced woman usually returned to her father’s family (Lev 22:13), but a mature single woman who made a vow or pledge was required to fulfill her religious duties.