Exodus 34:20
But the firstling of an ass thou shalt redeem with a lamb: and if thou shalt not redeem him, then shalt thou break his neck. All the first-born of thy sons thou shalt redeem. And none shall appear before me empty.
Exodus 23:15
Thou shalt keep the feast of unleavened bread: (thou shalt eat unleavened bread seven days, as I commanded thee, in the time appointed of the month Abib; for in it thou camest out from Egypt: and none shall appear before me empty:)
Deuteronomy 16:16
Three times in a year shall all thy males appear before the LORD thy God in the place which he shall choose; in the feast of unleavened bread, and in the feast of weeks, and in the feast of tabernacles: and they shall not appear before the LORD empty:
Exodus 13:15
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.
Exodus 13:13
And every firstling of an ass thou shalt redeem with a lamb; and if thou wilt not redeem it, then thou shalt break his neck: and all the first-born of man among thy children shalt thou redeem.
Numbers 18:15
Every thing that openeth the matrix in all flesh, which they bring to the LORD, whether of men or beast, shall be thine: nevertheless, the first born of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.
Exodus 13:10
Thou shalt therefore keep this ordinance in its season from year to year.
Numbers 3:45-51
Take the Levites instead of all the first-born among the children of Israel, and the cattle of the Levites instead of their cattle; and the Levites shall be mine: I am the LORD.
1 Samuel 9:7-8
Then said Saul to his servant, But behold, if we go, what shall we bring to the man? for the bread is spent in our vessels, and there is not a present to bring to the man of God: what have we?
2 Samuel 24:24
And the king said to Araunah, No; but I will surely buy it of thee at a price: neither will I offer burnt-offerings to the LORD my God of that which doth cost me nothing. So David bought the threshing-floor and the oxen for fifty shekels of silver.