God cares for His children and feeds them in two ways: in the way of miracles, as shown by the manna, and in the way of natural law, as shown by sowing and reaping. Concerning both of these means of supply, God is the source. He is the One who sends the manna, and He is the One who supplies the seed for sowing and the bread for food. Having a deep realization of these facts and possessing a thorough knowledge of God's economy, the apostle had the assurance and the peace to encourage the impoverished saints in Macedonia (2 Cor. 8:2; 9:2) to give of what they had to meet the needs of others.