Exodus 34:17-19 Authorized (King James) Version (AKJV)
17 Thou shalt make thee no molten gods.
18 The feast of unleavened bread shalt thou keep. Seven days thou shalt eat unleavened bread, as I commanded thee, in the time of the month Abib: for in the month Abib thou camest out from Egypt.
19 All that openeth the matrix is mine; and every firstling among thy cattle, whether ox or sheep, that is male.