📖 Biblical Definition
Mount Sinai is the specific mountain where God descended in fire and smoke to give the law to Moses and establish His covenant with Israel. The theophany at Sinai is one of the most terrifying events in Scripture: the mountain shook, was wrapped in smoke, thunder and lightning blazed, a trumpet blast grew louder and louder, and the people trembled (Exodus 19:16-19). God spoke the Ten Commandments directly to the people, and they begged that He would speak no more (Deuteronomy 5:25). Moses ascended the mountain for forty days to receive the detailed law and the pattern for the tabernacle. Paul uses Mount Sinai as an allegory for the old covenant of law that produces bondage, contrasting it with the new covenant of grace symbolized by the heavenly Jerusalem (Galatians 4:24-26). The writer of Hebrews also contrasts Sinai (where even Moses said, "I tremble with fear") with Mount Zion, the city of the living God (Hebrews 12:18-24).
📜 Webster 1828 Definition
The mountain in Arabia where God delivered the law to Moses amid fire and thunder.
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SI'NAI, MOUNT, n. The sacred mountain in the Sinaitic peninsula where God appeared in glory and delivered the law to Moses. The scene was one of unparalleled majesty and terror.
📖 Key Scripture
• Exodus 19:16-18 — "On the morning of the third day there were thunders and lightnings and a thick cloud on the mountain... Mount Sinai was wrapped in smoke."
• Deuteronomy 5:22 — "These words the LORD spoke to all your assembly at the mountain out of the midst of the fire, the cloud, and the thick darkness."
• Galatians 4:24-25 — "One is from Mount Sinai, bearing children for slavery; she is Hagar. Now Hagar is Mount Sinai in Arabia."
• Hebrews 12:18-21 — "For you have not come to what may be touched, a blazing fire and darkness... Indeed, so terrifying was the sight that Moses said, 'I tremble with fear.'"
⚠️ Modern Corruption
Mount Sinai is either dismissed as irrelevant under grace or idolized by legalists who want to remain under the old covenant.
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The two errors regarding Mount Sinai mirror the two errors regarding the law itself. Antinomians dismiss Sinai as obsolete, as though the God who spoke the Ten Commandments in fire has changed His mind about holiness. Legalists camp at Sinai, refusing to move to Zion, imposing the old covenant's ceremonial and civil regulations on new covenant believers. The biblical truth is that the law is holy, righteous, and good (Romans 7:12), but it was never the means of justification. The law diagnoses the disease; only Christ provides the cure. Mount Sinai drives us to Christ; it was never meant to be our permanent address.
Usage
• "Mount Sinai trembled when God descended -- and so should every human heart that imagines it can stand before a holy God on the basis of its own righteousness."
• "Paul says Sinai represents bondage and Zion represents freedom. The question for every believer is: which mountain are you living on?"