John Gill Bible Commentary

Judah and Israel were many, as the sand which is by the sea in multitude,.... Being blessed with great fruitfulness in their families, and having no pestilential disease among them, nor wars to lessen their number, and so the promise to Abraham was fulfilled, Gen 22:17; and which was an emblem of Christ's spiritual subjects, especially in the latter day, whom Solomon was a type of, see Hos 1:10; eating, and drinking, and making merry; having a large increase of the fruits of the earth, and in no fear of any enemies; expressive of the spiritual joy of believers in the kingdom of Christ, and under the word and ordinances, Sol 2:3.