Matthew Poole and continuators on Exodus 34:19

19 All that openeth the matrix, is mine: and every firstling amongst thy cattle, whether oxe or sheep, that is male .

Heb. And (for, That is, as the particle, and, is oft used the words following here and verse 20. being a particular explication of the general sentence in the beginning of this verse) all thy cattle which (a particle oft understood) shall be born male, (as it is also explained Exod. 13. 12.) the opening or whatsoever (to wit, of the male-kind) openeth the matrix (which word is fitly understood cut of the former member, which is very usual) of Ox or (and put for or, as it is oft done) Sheep.

Marginal references: chap. 22. 29. Ezek. 44. 30. Luk. 2. 23.