This is an act that shows mourning or great sadness. Alternate translation: "he tore his clothes from grief" (See: [[rc://en/ta/man/translate/translate-symaction]])
Here Jephthah speaks of his great sorrow as something that crushes him. Alternate translation: "You have caused me great sorrow" or "You have filled me with sorrow" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Here Jephthah talks about his great distress and trouble as if it were pain. Alternate translation: "you have become someone who troubles me" or "you cause me great distress" (See: [[rc://en/ta/man/translate/figs-metaphor]])
This is an idiom. To turn back on a promise means to not do what you have promised to do. Alternate translation: "I must do what I have promised" or "I cannot break my promise" (See: [[rc://en/ta/man/translate/figs-idiom]])