Deuteronomy 16:3-4

Great(i) 3 Thou shalt eate no leuened bread with it: but seuen dayes shalt thou eate vnleuened bred therwith: euen the bread of trybulacyon (for thou camest out of the lande of Egypte in haste) that thou mayst remembre the daye, when thou camest out of the lande of Egypte, all dayes of thy lyfe. 4 And there shall be no leuened bread sene in all thy coastes seuen dayes longe, neyther shall there remayne any thynge of the fleshe which thou offrest the fyrst daye at euen, vntyll the mornynge.