And the Lord spake unto Moses Continued to speak unto him, and give him the reason of his appointing the Levites to minister to the priests and serve the tabernacle:
12
`And I, lo, I have taken the Levites from the midst of the sons of Israel instead of every first-born opening a womb among the sons of Israel, and the Levites have been Mine;
13
for Mine [is] every first-born, in the day of My smiting every first-born in the land of Egypt I have sanctified to Myself every first-born in Israel, from man unto beast; Mine they are; I [am] Jehovah.'
Young's Literal Translation is in the public domain.