Where does Love originate? In that, sacrificial love? The unconditional love that would die in the place of another. Love that Jephthah did not have for his own flesh and blood. He could have offered himself to die in his daughter's place. Old Testament sacrificial law allowed substitution.
Read the tragic story of Jephthah and his daughter here:
"Greater love hath no man than this, that a man lay down his life for his friends." ~John 15:13
~dkg