The Bible asked for us to give our first and our best back to God, and He will bless the rest. We return to the Lord 10% of what He's given us because it belongs to Him. If you're not tithing already, a great way to start is with the 90-Day Tithe Challenge. It’s based on the promises of God in Malachi 3:10 — If you tithe for 90 Days and don't see God's blessings in your life, we will refund 100% of your tithe.