'Parent' in the Bible

He who becomes the parent of a fool [who is spiritually blind] does so to his sorrow,And the father of a fool [who is spiritually blind] has no joy.

For if you were cut off from what is by nature a wild olive tree, and against nature were grafted into a cultivated olive tree, how much easier will it be to graft these who are the natural branches back into [the original parent stock of] their own olive tree?