Prepare the table, watch in the watchtower, eat, drink: {h} arise, ye princes, and anoint the shield.

(h) While they are eating and drinking, they will be commanded to run to their weapons.

Wesley's Notes

21:5 Prepare - Furnish it with meats and drinks. The prophet foretells what the Babylonians would be doing when their enemies were at their doors. Watch - To give us notice of any approaching danger, that in the meantime we may more securely indulge ourselves. Princes - Of Babylon: arise from the table and run to your arms. Shield - Prepare yourselves and your arms for the approaching battle. The shield is put for all their weapons of offence and defence. They used to anoint their shields with oil, to preserve and polish them, and to make them slippery.

Jamieson-Fausset-Brown Bible Commentary

5. Prepare the table-namely, the feast in Babylon; during which Cyrus opened the dykes made by Semiramis to confine the Euphrates to one channel and suffered them to overflow the country, so that he could enter Babylon by the channel of the river. Isaiah first represents the king ordering the feast to be got ready. The suddenness of the irruption of the foe is graphically expressed by the rapid turn in the language to an alarm addressed to the Babylonian princes, "Arise," &c. (compare Isa 22:13). Maurer translates, "They prepare the table," &c. But see Isa 8:9.

watch in . watchtower-rather, "set the watch." This done, they thought they might feast in entire security. Babylon had many watchtowers on its walls.

anoint . shield-This was done to prevent the leather of the shield becoming hard and liable to crack. "Make ready for defense"; the mention of the "shield" alone implies that it is the Babylonian revellers who are called on to prepare for instant self-defense. Horsley translates, "Grip the oiled shield."

Matthew Henry's Concise Commentary

21:1-10 Babylon was a flat country, abundantly watered. The destruction of Babylon, so often prophesied of by Isaiah, was typical of the destruction of the great foe of the New Testament church, foretold in the Revelation. To the poor oppressed captives it would be welcome news; to the proud oppressors it would be grievous. Let this check vain mirth and sensual pleasures, that we know not in what heaviness the mirth may end. Here is the alarm given to Babylon, when forced by Cyrus. An ass and a camel seem to be the symbols of the Medes and Persians. Babylon's idols shall be so far from protecting her, that they shall be broken down. True believers are the corn of God's floor; hypocrites are but as chaff and straw, with which the wheat is now mixed, but from which it shall be separated. The corn of God's floor must expect to be threshed by afflictions and persecutions. God's Israel of old was afflicted. Even then God owns it is his still. In all events concerning the church, past, present, and to come, we must look to God, who has power to do any thing for his church, and grace to do every thing that is for her good.