2. Speak unto the children of Israel, . . . concerning the feasts of the Lord--literally, "the times of assembling, or solemnities" (Isa 33:20); and this is a preferable rendering, applicable to all sacred seasons mentioned in this chapter, even the day of atonement, which was observed as a fast. They were appointed by the direct authority of God and announced by a public proclamation, which is called "the joyful sound" (Ps 89:15). Those "holy convocations" were evidences of divine wisdom, and eminently subservient to the maintenance and diffusion of religious knowledge and piety.

JFB.