Our God shall come, and shall not keep silence: a fire shall devour before him, and it shall be very tempestuous round about him.
Our God shall come. "OUR God" contains the reason why He shall come-namely, because He is the God of His waiting people (Hebrews 9:28).
And shall not keep silence. The ungodly think that, because He now keeps silence, He will never come and speak the sentence of doom upon transgressors; therefore they go on in their course of wickedness (Psalms 50:21). The godly, too, have their patience sorely tried by God's seeming slowness in fulfilling His promise of vindicating His people openly by word and deed: let them remember "the vision is yet for an appointed time, but at the end it shall speak and not lie; though it tarry, wait for it, because it will surely come, it will not tarry" (Habakkuk 2:3).
A fire shall devour before him - an accompaniment of the second advent (2 Thessalonians 1:8-9; Hebrews 10:27; 2 Peter 3:7; 2 Peter 3:10). So at Sinai (Exodus 19:16; Exodus 20:18; Exodus 24:17).
And it shall be very tempestuous round about him. Fire and storm are symbols of God's anger (1 Kings 19:11-12; Ezekiel 13:11; Hebrews 12:29).