For when Pharaoh stubbornly refused to let us go, the LORD slew all the first-born in the land of Egypt, both the first-born of man and the first-born of cattle. Therefore I sacrifice to the LORD all the males that first open the womb; but all the first-born of my sons I redeem.'
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.
(Revised Standard Version - Holy Bible)