“It is not the children of the flesh who are the children of God, but the children of the promise are counted as offspring. For this is what the promise said: ‘About this time next year I will return, and Sarah shall have a son.’ ”
There is a good reason fruit is often used as a metaphor for children, both in the Bible and elsewhere. You don’t need to be a geneticist to observe that the fruit of a tree carries in it the nature of the tree on which it grows, and expresses that nature to the world in the next generation. Or at least it should. Real-world results with human beings vary, as we have all observed.
Turnabout being fair play, perhaps you will excuse me using children as a metaphor for fruit. Well, metaphorical fruit at least.