Shemot 12:39-41

Orthodox Jewish Bible

³⁹ And they baked the batzek (deaf dough) which they brought forth out of Mitzrayim, into round flat cakes of matzot; ki lo chametz, because they were thrust out of Mitzrayim, and could not tarry (linger), neither had they prepared for tzeidah (supply of food, provision).

⁴⁰ Now the moshav (time period of residence) of the Bnei Yisroel dwelling in Mitzrayim was four hundred and thirty shanah.

⁴¹ And it came to pass at the ketz (end) of the four hundred and thirty shanah, even the exact day it came to pass, that kol Tzivos Hashem went out from Eretz Mitzrayim.