Tithing is an expression of your personal love for Christ. you can not beat God and His giving, starting with giving you life, God continually shows his love for for you each and every day. God asks that of all that he has given us, The very least that we can do is give him 10% of our time, our talent and our treasure. Think about it, have you volunteered in any activity that furthers the kingdom building work of the saints. Do you possess a skill that no one else can do, but you keep it hidden or only use that skill to make money? Do you give God, his tenth of the money that He has provided to you? How are you showing God that you love Hi?
Why Tithe? Because God wants to see just how much you love Him. It's not lip service, it is Love in Action.