I. It is here taken for granted that posterity would enquire into the meaning of them, supposing them intended for a memorial: Your children shall ask their fathers (for who else should they ask?) What mean these stones? Notes, Those that will be wise when they are old must be inquisitive when they are young. Our Lord Jesus, though he had in himself the fulness of knowledge, has by his example taught children and young people to hear and ask questions, Luke ii. 46. Perhaps when John was baptizing in Jordan at Bethabara (the house of passage, where the people passed over) he pointed at these very stones, while saying (Matt. iii. 9) God is able of these stones (which were at first set up by the twelve tribes) to raise up children unto Abraham. The stones being the memorial of the miracle, the children's question gave occasion for the improvement of it; but our Saviour says (Luke x. 40), If the children should hold their peace, the stones would immediately cry out; for one way or other the Lord will be glorified in his works of wonder.