Malachi 3:7-9

7 I have told you my commands. But you do not listen to me any longer. Since the time of your ancestors, you have not obeyed me. Now, return to me! Then I will return to bless you.’

That is what the Lord Almighty says.

‘But you ask, “How do we return to you?” 8 I say to you, “A man should not rob God. But you are robbing me.”

But you ask, “How do we rob you?” I say, “You do not give me the tithes and the offerings that you should give.” 9 Yes, all of you are robbing me. The whole nation is guilty. So you will receive the punishment of a curse.

3:9The Israelites had to take some of their crops (a tithe) to the temple. The tithe would help the work of the priests and the Levites in the temple. God chose the Levites to do special work for him in his temple. They helped the priests in the temple.