Only time will 'heal the rift/breach' between the two families. [=make the two families become friendly again]
The tree sap is believed to have 'healing' powers.
After the divorce, he needed some time to 'heal'.
(..) right? - Correct. Does it hurt when you get shot? I sense injuries. The data could be called pain. John, help me with the light. Will these heal up? - Yes. Good. If you can't pass for human, you're not much good to us. How long do you live, I mean ''last'', whatever? (..)1991 Terminator 2: Judgment Day