What does Malachi 2:13 mean?
Verse 13 actually sets up the accusation in verse 14 by describing the consequences first. Verse 12 made reference to men who attempted to make offerings to God despite being guilty of pagan intermarriage. Here, a similar problem is occurring. Those who make offerings to God are bitter because He is not answering. God is making good on His promise not to accept offerings which come from an impure heart (Malachi 1:10). As is common with humanity, we fail to obey God, and then blame him for the consequences.This is not to say that God will not hear the prayers of the divorced, nor ignore all of the offerings from anyone who is a sinner. It does, however, mean that we cannot expect God to bless us when we know we are defying His will. As best we know how, we ought to seek to be right with God before expecting Him to answer our requests.
Malachi brings three messages in the book. The first is to the priests regarding improper offerings. This second lesson is for the people of Israel, for their unfaithfulness to each other. The first sin of unfaithfulness was marrying pagans. The second will be detailed in verse 14. God is not answering prayers, or accepting offerings, because the men are divorcing their wives. This leads up to the Bible's strongest, clearest condemnation of divorce, in verse 16.
Malachi 2:10–16 is perhaps the Bible's strongest indicator of God's views on divorce. This passage begins the second of Malachi's three prophetic lessons, ending in Malachi 3:6. The people of Israel are rebuilding Jerusalem and the temple, but under the control of a foreign nation. Rather than honoring God, and their own wives, it seems the men of Israel were divorcing Jewish women in order to marry pagans (Ezra 9:1–2; Nehemiah 13:23–27). This is described in this passage as an act of violence against the women. In no uncertain terms, Malachi expresses God's hatred for divorce.
God will humiliate the priests who are insulting Him with improper sacrifices. While the priests are being unfaithful to God, the people of Israel are also being unfaithful to each other. In particular, they are marrying pagans, and committing divorce, which God absolutely despises. God's covenant with Israel included both blessings for obedience, and consequences for disobedience. And yet, as Israel disobeys, they blame God for their hardships. God's people are defying Him, then blaming Him for the end results!