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, Exodus 13:2,
Related Commentaries of Exodus 34:19
Exodus 34:19
19 All that openeth the matrix is mine; and every firstling among thy cattle, whether ox or sheep,b that is male.