God Shall Supply All Your Needs.

The apostle assures them that God did accept, and would recompense, their kindness to him. He did accept it: It is an odour of a sweet smell, a sacrifice acceptable, well-pleasing to God. Not a sacrifice of atonement, for none makes atonement for sin but Christ but a sacrifice of acknowledgment, and well-pleasing to God. It was more acceptable to God as it was the fruit of their grace than it was to Paul as it was the supply of his want. With such sacrifices God is well pleased, Hebrews 13:16.

He would recompense it: But my God shall supply all your wants according to his riches in glory by Christ Jesus, Philippians 4:19. He does as it were draw a bill upon the exchequer in heaven, and leaves it to God to make them amends for the kindness they had shown him. "He shall do it, not only as your God, but as my God, who takes what is done to me as done to himself. You supplied my needs, according to your poverty and he shall supply yours, according to his riches." But still it is by Christ Jesus through him we have grace to do that which is good, and through him we must expect the reward of it. Not of debt, but of grace for the more we do for God the more we are indebted to him, because we receive the more from him. - Matthew Henry