Judges 11:30

30 And Jephthah vowed a vow unto the LORD and said, If thou shalt without fail deliver the sons of Ammon into my hands,

Judges 11:30 Meaning and Commentary

Judges 11:30

And Jephthah vowed a vow unto the Lord
Before he set out for the land of the children of Ammon, and to fight with them; hoping that such a religious disposition of mind would be regarded by the Lord, and be acceptable to him, and he should be blessed with success in his enterprise:

and said, if thou shall without fail deliver the children of Ammon into
mine hands;
though he was assured of the justness of his cause, and of his call to engage in it, he seems to have some little diffidence in his mind about the success of it; at least, was not fully certain of it.

Judges 11:30 In-Context

28 But the king of the sons of Ammon did not hear the reasons of Jephthah which he sent him.

29 Then the Spirit of the LORD came upon Jephthah, and he passed through Gilead and Manasseh and passed through Mizpeh of Gilead, and from Mizpeh of Gilead he went unto the sons of Ammon.

30 And Jephthah vowed a vow unto the LORD and said, If thou shalt without fail deliver the sons of Ammon into my hands,

31 whoever comes forth of the doors of my house to meet me when I return in peace from the sons of Ammon shall surely be the LORD’s, and I will offer them up for a burnt offering.

32 So Jephthah went over unto the sons of Ammon to fight against them, and the LORD delivered them into his hands.