The sermon opens the sixth and final debate of the book of Malachi, drawn from Malachi 3:13-18, where wicked people within Israel accuse God of injustice: God seems to punish the good and reward the bad, and they conclude it is better to be wicked. The sermon asks how believers should understand God's justice when the world is filled with visible injustice.

God quotes the Israelites' own hidden words back to them: "It is vain to serve God. What is the profit of our keeping his charge?" The sermon explains that "keeping charge" means obeying God's instruction, and that the Israelites' claim of walking "as in mourning" before the Lord was hollow performance rather than genuine repentance. In the ancient world, mourning involved tearing clothes, fasting, and covering oneself in dust as an outward expression of true sorrow over sin, but Israel's mourning was only theater, borrowed from pagan religion, where worshippers appease fickle, fragile-egoed gods with gifts in hopes of a payoff. Israel had reduced covenant obedience to a transaction: perform religious duty, expect a return, and grow bitter when the expected blessing does not come.

The sermon presses this into the present, asking whether believers likewise treat obedience as a bargain with God — promising greater giving or service in exchange for healing, provision, or an answered prayer — and then growing resentful when hardship still comes, or superstitiously fearing "bad Christian karma" for a missed devotional. Against this, the sermon insists that God needs nothing from anyone; that anything withheld, even discipline, is for the believer's good; that all obedience is owed to God simply because he made and saved his people, giving no one leverage over him; and that the right posture is not transactional bargaining but grateful, willing service flowing from the knowledge that God loves us.

Returning to Malachi, the sermon traces how this transactional mindset curdles into envy and then into open admiration of "the arrogant" — those who live for themselves, test God, and seem to escape consequence while growing rich. The sermon calls listeners to examine their own jealousy of those who prosper unrighteously: exploiting loopholes, indulging freely, cutting corners, or profiting from insider advantage while the faithful wait in line and play by the rules. Such jealousy, the sermon warns, tempts believers to obey God grudgingly, as though his ways and his character were not truly good, when in fact a God who did not spare his own Son for us can be trusted not to withhold anything good from his people.

The sermon then turns to God's actual answer, given first in a heavenly rather than earthly scene: God has appointed a future day when confusion will be dispelled and justice rendered decisively. In the meantime, God is not indifferent — he pays attention to "those who fear the Lord," a summary phrase for true religion (echoing Ecclesiastes 12:13) that describes not mere outward compliance but a heart that respects God's power, trembles at his judgment, and is amazed by his mercy. Such people speak truth and encouragement to one another rather than being swept along by the world's admiration of wickedness, and God records their faithfulness in a "book of remembrance," a royal-court image assuring that God forgets neither his people's righteousness nor their sufferings, even when history seems to forget them.

The sermon unpacks the promised outcome using the image of sons in a family business: on the day of judgment, the faithful will be spared as a father spares his own children even amid failure, because they belong to him, while the rest of the world faces the same distinguishing justice God has enacted before — at the flood, at the conquest of Canaan, and at Sodom and Gomorrah. This raises the deeper question of why God delays that justice now. The sermon offers several biblical reasons: God's common grace toward all people; the accumulation of full and undeniable evidence of guilt before judgment, illustrated by God's postponement of Canaan's conquest until "the sin of the Amorites is not yet complete" (Genesis 15:16); and the sanctifying purpose of present suffering, which produces character and hope even through injustice (citing James 1).

Finally, the sermon applies this to Christian life: believers are called to pursue justice according to their God-given roles — through prayer, civic responsibility, and, where given authority, just laws — following the model of Esther, who used her position to intervene for her people. Yet the dominant Christian posture toward present injustice is endurance, since believers may legitimately differ in how they respond (speaking up, suffering silently, or working for change) without that difference fracturing the unity of the church. The sermon closes by pointing to the certainty of final justice (Romans 12:19, "Vengeance is mine, I will repay") as grounds not for personal vengeance or bitterness but for love, including gospel proclamation to those still living unjustly, since Christ himself has already borne the full penalty of God's justice for his people and secured their hope beyond this present, unjust age.

Bible Verses Used

• Malachi 3:13-18: The sermon's primary text — Israel's accusation that serving God is profitless, and God's answer that he remembers and will vindicate those who fear him.

• Ecclesiastes 12:13: Used to define "fearing the Lord" as the whole duty of man and the true substance of covenant faithfulness.

• Genesis 15:16: Cited to explain that God delays judgment until the full measure of a people's sin is complete, as with the Amorites before the conquest of Canaan.

• James 1: Referenced to show that present suffering under injustice is used by God to produce character and sanctify his people.

• Romans 12:19: Quoted ("Vengeance is mine, I will repay") as the basis for entrusting final justice to God rather than repaying evil for evil.

• 1 Peter 3:9: Cited to ground the call to bless rather than repay evil or insult, since believers are called to inherit a blessing.