Verse 18. - We are not able. Note again the evil of rash vows, and how often chicanery is necessary in order to evade their evil consequences.

17:7-13 Micah thought it was a sign of God's favour to him and his images, that a Levite should come to his door. Thus those who please themselves with their own delusions, if Providence unexpectedly bring any thing to their hands that further them in their evil way, are apt from thence to think that God is pleased with them.Howbeit, we may not give them wives of our daughters,.... Though their case was so very necessitous and desperate:

for the children of Israel have sworn, saying, cursed be he that giveth a wife to Benjamin, Judges 21:1 and therefore without the violation of their oath could not give any of their daughters in marriage to them: wherefore some other way must be devised to help them.