Thou shalt set apart unto the Lord— Shalt cause to pass over. Margin of our Bibles. Shalt transfer the right from thyself to the Lord. See Numbers 3:12-48. Every firstling that cometh of a beast, i.e. a clean beast, was to be offered in sacrifice. For the rest, see Numbers 18:17.
Related Commentaries of Exodus 13:12
Exodus 13:12
12 That thou shalt set apart unto the LORD all that openeth the matrix, and every firstling that cometh of a beast which thou hast; the males shall be the LORD'S.