And it came to pass, when Pharaoh would hardly let us go, that the LORD slew all the firstborn in the land of Egypt, both the firstborn of man, and the firstborn of beast: therefore I sacrifice to the LORD all that openeth the matrix, being males; but all the firstborn of my children I redeem.

and it came to pass, when Pharaoh would hardly let us go, that Jehovah slew all the first-born in the land of Egypt, both the first-born of man, and the first-born of beast: therefore I sacrifice to Jehovah all that openeth the womb, being males; but all the first-born of my sons I redeem.

For when Pharao was hardened, and would not let us go, the Lord slew every firstborn in the land of Egypt, from the firstborn of man to the firstborn of beasts: therefore I sacrifice to the Lord all that openeth the womb of the male sex, and all the firstborn of my sons I redeem.

And it came to pass, when Pharaoh stubbornly refused to let us go, that Jehovah slew all the firstborn in the land of Egypt, both the firstborn of men and the firstborn of cattle: therefore I sacrifice to Jehovah all that breaketh open the womb being males; and every firstborn of my children I ransom.

and it came to pass, when Pharaoh would hardly let us go, that the LORD slew all the firstborn in the land of Egypt, both the firstborn of man, and the firstborn of beast: therefore I sacrifice to the LORD all that openeth the womb, being males; but all the firstborn of my sons I redeem.

And it came to pass, when Pharaoh would hardly let us go, that the LORD slew all the first-born in the land of Egypt, both the first-born of man, and the first-born of beasts: therefore I sacrifice to the LORD all that openeth the matrix, being males; but all the first-born of my children I redeem.

yea, it cometh to pass, when Pharaoh hath been pained to send us away, that Jehovah doth slay every first-born in the land of Egypt, from the first-born of man even unto the first-born of beast; therefore I am sacrificing to Jehovah all opening a womb who are males, and every first-born of my sons I ransom;

And it came to pass, when Pharaoh would hardly let us go, that the LORD slew all the firstborn in the land of Egypt, both the firstborn of man, and the firstborn of beast: therefore I sacrifice to the LORD all that opens the matrix, being males; but all the firstborn of my children I redeem.

And when Pharaoh made his heart hard and would not let us go, the Lord sent death on all the first sons in Egypt, of man and of beast: and so every first male who comes to birth is offered to the Lord; but for all the first of my sons I give a price.

and it came to pass, when Pharaoh would hardly let us go that the LORD slew all the firstborn in the land of Egypt, both the first-born of man, and the first-born of beast; therefore I sacrifice to the LORD all that openeth the womb, being males; but all the first-born of my sons I redeem.

For when Pharaoh had been hardened and was unwilling to release us, the Lord killed every firstborn in the land of Egypt, from the firstborn of man, even to the firstborn of beasts. For this reason, I immolate to the Lord all of the male sex that opens the womb, and all the firstborn of my sons I redeem.'

Et fuit quum indurasset se Pharao quominus dimitteret nos, occidit Jehova omne primogeniture in terra Aegypti, a primogenito hominis usque ad primogenitum animalis: idcirco ego sacrifico Jehovae omnem apertionem vulvae sexus masculini, omne autem primogeniture filiorum meorum redimo.

And it came to pass, when Pharaoh would hardly let us go,.... Showed great reluctance to it, and with difficulty was prevailed upon to dismiss them:
that the Lord slew all the firstborn in the land of Egypt, both the firstborn of men, and the firstborn of beast: which he did in one night, making use of a destroying angel or angels for that purpose:
therefore I sacrifice to the Lord all that openeth thee matrix, being males; that is, the firstborn of all clean creatures, as oxen, sheep, and goats:
but all the firstborn of my children I redeem; by paying five shekels apiece to the priest for them, as before observed; and this law continues to be observed with the Jews; the manner of which, as related by Leo Modena (i), is as follows,"Thirty days being expired after the birth of the child, they call a priest to them; that is to say, one that is descended of the stock of Aaron, whom the father of the child pleaseth; and so, many people being gathered together at the time appointed, the father of the child bringeth before the priest, in a bowl or basin, a good quantity of gold and silver, and then they give him the child into his arms; the priest then calling the mother of it before him, saith unto her, mistress, is this your son? she answereth, yes; then, replies he, have you never had any child before, either male or female, or have miscarried anyone? she saith unto him, no; then doth the priest say, this child is mine, as being the firstborn; then turning himself toward the father, he asketh him, whether he will redeem it or not? who answereth him, saying, see, here is gold and silver, take your own price; then saith the priest unto him, you will redeem it then? the father answereth, I will redeem it; it shall be so then, saith the priest, this child is mine as being the firstborn, as it is written, Numbers 18:16. I therefore take this in exchange, &c. and so he takes the sum of two French crowns, or thereabout, as he thinks good, and then delivers the child to his father and mother, and this day they make a feasting day.''This custom was used in Christ's time, and was observed with respect to him, Luke 2:27.
(i) History of the Jews, par. 4. c. 9. sect. 2.