Isaiah 60:6 - Matthew Poole's English Annotations on the Holy Bible

The multitude of camels, i.e. the abundance of wealth and treasure that is brought upon camels; this being the creature the Eastern people used for carriage of their gold and spice, and other rich treasure, which are said to cover them; the like phrase with that Judges 6:5: or whereby is understood those people that did use to ride on camels, as the Arabians and the bordering countries; for by these and such-like figurative and borrowed expressions in several verses, of this chapter is particularized several nations, and by them is implied the coming in of all nations unto Christ; and therefore they are brought in as presenting the choicest commodities of their respective countries, so that we may be the better excused from speaking particularly to them in their respective places. The dromedaries; or, also or even the dromedaries, which are a lesser sort of camel, so called from their swiftness in running, to which they are the better enabled, because, as Pliny observes, they can endure thirst four days together: q.d. They shall make all the haste imaginable in bringing their riches to thee. Of Midian and Ephah: both these Midianites and Ephaites descended from Abraham by Keturah, Genesis 25:2,4; they dwelt beyond Arabia; and camels are mentioned coming from hence, because of all places they were the most numerous here, Judges 7:12. Sheba: this Sheba descended from Cush, the son of cursed Ham, the son of Noah, Genesis 10:6,7, from whom a certain country in Arabia Felix took its name, whose queen it was that came to visit Solomon 1 Kings 10:1; and her bringing gifts might be a type of this, Solomon being a type of Christ, of which the wise men might be the first-fruits, Mt 2. Shall bring gold and incense; the principal commodities with which this country abounded, and by which we are to understand whatever is precious; and frankincense is only peculiar to Arabia. They shall show forth the praises of the Lord; the motive drawing them thither being more for religion than trade.