John Gill Bible Commentary

Ye shall eat nothing leavened,.... Bread or anything else that had any leaven in it: in all your habitations shall ye eat unleavened bread, that is, if they eat any bread at all, it must be such; otherwise they might eat cakes of almonds or of eggs mixed with sugar, provided there was no leaven used, and this the Jews call the rich unleavened bread (p): this is repeated over and over, that they might be the more careful of observing this precept; but as this was limited for a certain time, it plainly appears to be a mistake of Tacitus (q) the Roman historian, who represents unleavened bread as the bread the Jews eat of in common. (p) See Leo Modena's History of the Rites, &c. of the Jews, par. 3. c. 3. sect. 5. (q) Hist. l. 5. c. 4.