Ananias and Sapphira ran into big trouble because they didn't understand it. See Acts 5:1–11 . Jesus fed a multitude with five loaves and two fishes because he did. See Matt. 14:15—21 . The children of Israel "murmured against Moses and Aaron" because they didn't know its source. See Ex. 16:2. Elijah saved a widow and her son because he did. See I Kings 17:10-16 .
What is it?
The supply of food, money, clothing—whatever is needed for human well-being.