I the Lord do not change. So you, O descendants of Jacob, are not destroyed. Ever since the time of your forefathers you have turned away from my decrees and have not kept them. Return to me, and I will return to you,” says the Lord Almighty. But you ask, ‘How are we to return?’ Will a man rob God? Yet you rob me. But you ask, ‘How do we rob you?’ In tithes and offerings. You are under a curse – the whole nation of you – because you are robbing me. Bring the whole tithe into the storehouse, that there may be food in my house. Test me in this says the Lord Almighty and see if I will not throw open the floodgates of heaven and pour out so much blessing that you will not have room enough for it. Malachi 3:6-11

For the law was given through Moses; grace and truth came through Jesus Christ. John 1:17

On the first day of every week, each one of you should set aside a sum of money in keeping with his income, saving it up, so that when I come no collections will have to be made. 1 Corinthians 16: 2

Remember this: Whoever sows sparingly will also reap sparingly, and whoever sows generously will also reap generously. Each man should give what he has decided in his heart to give, not reluctantly or under compulsion, for God loves a cheerful giver. And God is able to make all grace abound to you, so that in all things at all times, having all that you need, will abound in every good work. You will be made rich in every way so that you can be generous on every occasion and through us your generosity will result in thanksgiving to God. This service that you perform is not only supporting the needs of God’s people but is also overflowing in many expressions of thanks to God. 2 Corinthians 9: 6-8, 11-13

Command those who are rich in the present world not to be arrogant nor to put their hope in wealth, which is so uncertain, but to put their hope in God, who richly provides us with everything for our enjoyment. Command them to do good, to be rich in good deeds and to be generous and willing to share. In this way they will lay up treasure for themselves as a firm foundation for the coming age, so that they may take hold of the life that is truly life.
1 Timothy 6: 17-19