The Power of Tithing

I have a confession to make: I used to give a measly P20.00 for my offering to God. Yes, I was that stingy when it comes to giving back to God, the source of all blessings. Why was I that scant in giving to God? It's because I was not a believer of tithing then. I used to think that it was an Old Testament practice and our Church does not impose it on us. Besides, I see other churchgoers giving the same amount or even less. Also, my thinking then was that If I would give 10% of my income for my offering, how much more will be left for our family's expenses?