We all know the following scenario, whether we've been in it or simply seen it.
A father is with his son/daughter at McDonald's or another fast food restaurant. He orders a Happy Meal for his child and they sit there eating. The father reaches over to take a french fry from the kid's meal, and the child slaps the father's hand. Wait, a minute! Didn't the dad just buy that meal? Sure, it's in front of the child, and the dad gave it to the child to eat, but where did that meal come from and who does it really belong to?
How often do we do this to God?
God gives us things. He provides for us by allowing us to have a job (or unemployment), food, places to live, friends to rely on, and so on. Then He wants to get a little back, say, oh, tithe maybe? He's given us all of this and asks for only a little back. Then we slap his hand and say "no, that's mine!" Is it really ours? Where did that come from in the first place?
The next time you hear about giving of your time, heart, or paycheck, remember the story of the father and the child's happy meal. When we have a full meal in front of us, let's not get selfish when the one who bought it wants a french fry.