New Defender's Study Bible Notes
2:20 his holy temple. This can only refer to God’s heavenly temple (Isaiah 6:1), since the earthly temple built by Solomon was about to be destroyed by Nebuchadnezzar (II Chronicles 36:19).
2:20 keep silence. Men should stand in mute humility at the very thought of the omnipotent, omniscient God. Instead they, like the pagan Babylonians and the apostate Jews, presume to disobey Him, to find substitutes for Him, to rail against Him, or more often simply to ignore Him in their own clamorous pursuit of wealth and pleasure. Soon may come the proclamation: “Hold thy peace at the presence of the Lord God: for the day of the LORD is at hand” (Zephaniah 1:7).