the firstling

Exodus 13:2, 12
"Consecrate to Me every firstborn male. The firstborn from every womb among the Israelites belongs to Me, both of man and beast." . . .

Exodus 34:19
The first offspring of every womb belongs to Me, including all the firstborn males among your livestock, whether cattle or sheep.

Leviticus 27:26
But no one may consecrate a firstborn of the livestock, because a firstborn belongs to the LORD. Whether an animal from the herd or flock, it is the LORD's.

Numbers 3:13
because all the firstborn are Mine. On the day I struck down every firstborn in the land of Egypt, I consecrated to Myself all the firstborn in Israel, both man and beast. They are Mine; I am the LORD."

Numbers 18:17
But you must not redeem the firstborn of an ox, a sheep, or a goat; they are holy. You are to sprinkle their blood on the altar and burn their fat as an offering made by fire, a pleasing aroma to the LORD.

Romans 8:29
For those God foreknew, He also predestined to be conformed to the image of His Son, so that He would be the firstborn among many brothers.

Hebrews 12:23
in joyful assembly, to the congregation of the firstborn, enrolled in heaven. You have come to God the judge of all men, to the spirits of the righteous made perfect,

thou shalt do

Deuteronomy 12:5-7, 17
Instead, you must seek the place the LORD your God will choose from among all your tribes to establish as a dwelling for His Name, and there you must go. . . .

Deuteronomy 14:23
And you are to eat a tenth of your grain, new wine, and oil, and the firstborn of your herds and flocks, in the presence of the LORD your God at the place where He will choose as a dwelling for His Name, so that you may learn to fear the LORD your God always.

Deuteronomy 16:11, 14
and you shall rejoice before the LORD your God in the place where He will choose as a dwelling for His Name--you, your sons and daughters, your menservants and maidservants, and the Levite within your gates, as well as the foreigner, the fatherless, and the widows among you. . . .

Numbers 18:15
The firstborn of every womb, whether man or beast, that is offered to the LORD belongs to you. But you must surely redeem every firstborn son and every firstborn male of unclean animals.