Charles H. Spurgeon on Psalms 114:4

At the giving of the law at Sinai, Horeb and the mountains around, both great and small, shook with a sudden and mighty earthquake, like rams leaping in a grassy plain, with the young sheep frisking round them. —Plain Commentary.

Verses 4-6. When Christ descends upon the soul in the work of conversion, what strength doth he put forth! The strongholds of sin are battered down, every high thing that exalts itself against the knowledge of Christ is brought into captivity to the obedience of his sceptre, 2Co 10:4-5. Devils are cast out of the possession which they have kept for many years without the least disturbance. Strong lusts are mortified and the very constitution of the soul is changed. What ailed thee, O thou sea, that thou fleddest? thou Jordan, that thou wast driven back? ye mountains, that ye skipped like rams?, etc. The prophet speaks those words of the powerful entrance of the children of Israel into Canaan. The like is done by Christ in the conversion of a sinner. Jordan is driven back, the whole course of the soul is altered, the mountains skip like rams. There are many mountains in the soul of a sinner, as pride, unbelief, self conceitedness, atheism, profaneness, etc. These mountains are plucked up by the roots in a moment when Christ begins the work of conversion. —Ralph Robinson.