There are some good answers here already, but the heart of this matter is that Jephthah made a foolish promise to God. Here is a man that was ran out of town because his mother was a harlot.
1:14 And if the burnt sacrifice for his offering to the LORD [be] of fowls, then he shall bring his offering of turtledoves, or of young pigeons. 1:15 And the priest shall bring it unto the altar, and wring off his head, and burn [it] on the altar; and the blood thereof shall be wrung out at the side of the altar:
Mar 16, 2020 · What Does The Bible Say About Sacrifice? In Christ, we sacrifice our lives on a daily basis as we live with the impact of His Ultimate Sacrifice on the Cross at Calvary. John 3:16-17 says, “For God loved the world so much that He gave His only Son, so that everyone who believes in Him may not die but have eternal life.