What does Malachi 2:5 mean?
In the nation of Israel, only those of the tribe of Levi could serve as priests (Numbers 18:6–8). In order to devote themselves to the temple, the Levites had to give up the right to a land inheritance. Instead, and in return for their service, God decreed that the Levites would be supported by the offerings of the people (Numbers 18:19–21). God's arrangement with the Levites allowed Israel to commune with God, and to be forgiven for their sins. This system was rooted in a deep respect for the holiness and power of God. As is common in ancient texts, the name "Levi" stands for the entire tribe.The current situation with the priests of Israel cannot be left unchecked. God, being holy, cannot allow sin to go unpunished. At the same time, He will honor His promise to the tribe of Levi. So, the priesthood will be purified. If the priests will not honor God in response to His love, or His word, then they will learn to honor Him in response to His judgment. This will return the Levitical priesthood to its proper attitude: one of respect and awe.