"Then Jacob made this vow: 'If God will indeed be with me and protect me on this journey, and if he will provide me with food and clothing, and if I return safely to my father's home, then the LORD will certainly be my God. And this memorial pillar I have set up will become a place for worshiping God, and I will present to God a tenth of everything he gives me.'"
Notice that giving a tithe is connected to worship. It is an acknowledgment that God is the source of everything we have. The tithe always seems to be an expression of true worship of God. Are you giving back at least a tenth of all God gives you, not as a legalistic rule, but as an expression of your gratitude and trust?