2 Corinthians 9:7; 2 Corinthians 11:11; 2 Corinthians 12:15

7 Each one must do just as he has purposed in his heart, not grudgingly or under compulsion, for God loves a cheerful giver.
11 Why ? Because I do not love you? God knows I do!
15 I will most gladly spend and be expended for your souls. If I love you more, am I to be loved less?