1 Kings 17:15 - Ellicott's Commentary On The Whole Bible

The barrel of meal wasted not. — The miracle is doubly remarkable. First, in this instance, as in the similar miracles of Elisha and of our Lord Himself, we see that God’s higher laws of miracle, like the ordinary laws of His providence, admit within their scope the supply of what we should consider as homely and trivial needs — in this respect perhaps contradicting what our expectation would have suggested. Next, that it is a miracle of multiplication, which is virtual creation — not necessarily out of nothing — doing rapidly and directly what, under ordinary laws, has to be done slowly and by indirect process.