Now concerning the collection for the saints …upon the first day of the week let every one of you lay by him in store as God hath prospered him, that there be no gatherings when I come. I Corinthians 16:1-2

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. Malachi 3:10