Parallel
Exodus 13:6
Swete's Septuagint · Berean Standard Bible
ἓξ ἡμέρας ἔδεσθε ἄςυμα τῇ δὲ ἡμέρᾳ τῇ ἑβδόμη ἑορτὴ κυρίου·
For seven days you are to eat unleavened bread, and on the seventh day there shall be a feast to the LORD.