Malachi 3:10

Bring ye all the tithes into the storehouse, that there may be meat in mine house, and prove me now herewith, saith the LORD of hosts, if I will not open you the windows of heaven, and pour you out a blessing, that there shall not be room enough to receive it.

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If you bring your offerings to God He will bless you. He doesn't want just your money but your time and obidience, love and mercy, along with the sacrifices you make in this life to please Him.