The jar of flour was not exhausted and the jug of oil did not run dry, according to the word that the LORD had spoken through Elijah.
We have here an account of the further protection Elijah was taken under, and the further provision made for him in his retirement. At destruction and famine he shall laugh that has God for his friend to guard and maintain him.
Commenting on 1 Kings 17:8-16
And the barrel of meal wasted not, neither did the cruse of oil fail, according to the word of the Lord, which he spake by Elijah. There being a continual increase and supply of both, through the mighty power of God working a continued miracle; just as the loaves and fishes were increased while the disciples were eating, Mat 14:19. .
The barrel of meal wasted not - She continued to take out of her jar and out of her bottle the quantity of meal and oil requisite for the consumption of her household; and without carefully estimating what was left, she went with confidence each time for a supply, and was never disappointed.