David has a vision of the apostles going forth into the world after the Ascension to preach the gospel.
Two of them - both haloed, one tonsured, the other with a mane of hair and a beard - proclaim the "good news" to the people of the world who are represented by Africans on the left and Caucasians on the right. Neither group seems overly interested in the teaching.
The Duc de Berry's bear gambols in the foliage of the marginal decoration, which is contemporaneous with the Limbourgs' miniature.
Under the picture begins Psalm VIII, the fifth verse of which was interpreted as a proclamation of the future preaching of the apostles: "Their sound hath gone forth into all the earth: and their words unto the ends of the world."

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