A fire goeth before him, and burneth up his enemies round about.

Jamieson-Fausset-Brown Bible Commentary

3-5. The attending illustrations of God's awful justice on enemies (Ps 83:14) are seen in the disclosures of His almighty power on the elements of nature (compare Ps 46:2; 77:17; Hab 3:6, &c.).

Matthew Henry's Concise Commentary

97:1-7 Though many have been made happy in Christ, still there is room. And all have reason to rejoice in Christ's government. There is a depth in his counsels, which we must not pretend to fathom; but still righteousness and judgment are the habitation of his throne. Christ's government, though it might be matter of joy to all, will yet be matter of terror to some; but it is their own fault that it is so. The most resolute and daring opposition will be baffled at the presence of the Lord. And the Lord Jesus will ere long come, and put an end to idol worship of every kind.