In John 21, the apostles were out fishing all night and caught nothing. When Jesus told them to cast again they must’ve thought, “we the expert fisherman have had no success, but if you say so, we’ll give it a try.” You know how they then caught so many fish they had a hard time dragging their net ashore.
Tithing is like that. We struggle to stay afloat, much less get ahead. God tells us to tithe the first ten percent. We think, ‘that won’t work’. But if we do it in obedience, like the apostle’s re-casting the net, we’ll reap rewards and blessings so that our nets fill to overflowing.
And anyway, it’s not our money.