What does "I will have mercy" show?
What does "I will have mercy" reveal about God's character and decisions?

Setting the context

Romans 9 is Paul’s Spirit-guided explanation of God’s sovereign dealings with Israel and the nations. To ground his argument, he quotes Exodus 33:19, reminding us of the moment when Moses pleaded to see God’s glory after Israel’s golden-calf failure. God’s answer then, and Paul’s point now, hinges on these words:

“ ‘For He says to Moses: I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion.’ ” (Romans 9:15)

God links the display of His glory to the exercise of His mercy. Everything God does in redemption and judgment flows from this self-revealed declaration.


Exploring the phrase “I will have mercy”

• “I will” underscores deliberate choice—God’s mercy issues from His will, not from human pressure or merit.

• “Have mercy” translates the Greek eleéō and Hebrew racham—terms that describe deep pity and active relief for the miserable. Mercy moves beyond feeling into decisive rescue.

• The repetition (“on whom I have mercy”) signals emphasis: mercy is God’s prerogative, free and uncoerced.


What it tells us about God’s character

• Sovereign: God possesses absolute authority to dispense mercy as He sees fit (Psalm 115:3).

• Personal: He speaks in first person; mercy flows from a relational God who engages individuals.

• Compassionate: “The LORD is compassionate and gracious, slow to anger, abounding in loving devotion” (Psalm 103:8). Mercy reveals a heart that aches over human ruin.

• Faithful to His nature: Because He is “rich in mercy” (Ephesians 2:4-5), He acts consistently with that abundance.

• Holy and just: Mercy never negates righteousness; it satisfies it through substitution (Isaiah 53:5-6; Romans 3:25-26).

• Never depleted: “His mercies never fail; they are new every morning” (Lamentations 3:22-23).


What it tells us about God’s decisions

• Freedom of grace: “So then, it does not depend on man’s desire or effort, but on God’s mercy” (Romans 9:16). His choices spring from grace, not obligation.

• Purposeful election: He mercifully chooses to save for the praise of His glory (Ephesians 1:5-6).

• Unpredictable to human expectation: He shows mercy to outsiders (Gentiles like Rahab) and withholds it from insiders who presume upon ancestry (unbelieving Israel).

• Redemptive aim: God’s decisions secure salvation for vessels of mercy while amplifying the riches of His glory (Romans 9:22-24).

• Consistent over time: From Noah’s ark (Genesis 6:8) to the new birth “through the resurrection of Jesus Christ” (1 Peter 1:3), mercy governs every stage of redemption history.


Living in the light of His mercy

• Humility: No room for boasting; every blessing traces back to God’s merciful initiative.

• Gratitude: Ongoing thankfulness fuels worship and obedience (Romans 12:1).

• Hope for the worst of sinners: If mercy rests on God’s will, no past is beyond His reach (1 Timothy 1:15-16).

• Confidence in prayer: Approach “the throne of grace… to receive mercy” (Hebrews 4:16).

• Merciful living: Those who have received mercy extend it to others (Luke 6:36; James 2:13).


Key takeaways

• God’s mercy is sovereign, personal, and inexhaustible.

• His decisions to bestow mercy arise entirely from His gracious will, never from human worthiness.

• The phrase “I will have mercy” anchors all redemptive history, displaying God’s glory by rescuing the undeserving.

• Embracing this truth cultivates humility, gratitude, hope, and a life patterned after His mercy.

How does Romans 9:15 highlight God's sovereignty in choosing whom to show mercy?
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