'Time to Come' in the Bible

so that this may be a sign among you; when your children ask later, ‘What do these stones mean to you?’

He said to the sons of Israel, “When your children ask their fathers in time to come, ‘What do these stones mean?’

But in truth we have done this out of concern, for a reason, saying, ‘In time to come your sons (descendants) may say to our sons, “What claim do you have to the Lord, the God of Israel?

but to be a witness between us and you and between the generations after us, that we are to perform the service of the Lord before Him with our burnt offerings, and with our sacrifices and with our peace offerings, so that your sons (descendants) will not say to our sons in time to come, “You have no part in the Lord.”’

So we said, ‘If your descendants should say this to us or to our descendants in time to come, then we can reply, “See the copy of the altar of the Lord which our fathers made, not for burnt offering or for sacrifice, but rather it is a witness between us and you.”’