Exodus 34:17-19

Young's Literal Translation

¹⁷ a molten god thou dost not make to thyself.

¹⁸ `The feast of unleavened things thou dost keep; seven days thou dost eat unleavened things, as I have commanded thee, at an appointed time, the month of Abib: for in the month of Abib thou didst come out from Egypt.

¹⁹ `All opening a womb [are] Mine, and every firstling of thy cattle born a male, ox or sheep;