Exodus 34:19

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

Exodus 34:19 Meaning and Commentary

Exodus 34:19

All that openeth the matrix is mine
Or "the womb", and therefore to be sanctified, and set apart for his use: this also was declared, and the law concerning it given, at the time of their coming out of Egypt, and here repeated, (See Gill on Exodus 13:2), (See Gill on Exodus 13:12).

Exodus 34:19 In-Context

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;
20 and the firstling of an ass thou dost ransom with a lamb; and if thou dost not ransom, then thou hast beheaded it; every first-born of thy sons thou dost ransom, and they do not appear before Me empty.
21 `Six days thou dost work, and on the seventh day thou dost rest; in ploughing-time and in harvest thou dost rest.
Young's Literal Translation is in the public domain.