It means God exhibits perfect justice and righteous indignation towards those not chosen for salvation.
The concept that God hates the reprobate is rooted in the biblical understanding of His justice and holiness. Scriptures like Psalm 5:5 and Romans 9:13 illustrate this reality, emphasizing that God's love has a dual aspect - love towards the elect and hatred towards those who reject Him. This hatred is not arbitrary; it's a reflection of God's righteous character and His justice upon those who are destined for condemnation. Recognizing this helps Christians to appreciate the severity of sin and the greatness of divine grace extended to the elect, urging a response of reverent fear and gratitude towards God for His sovereign mercy.
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