There you shall bring your burnt offerings, your sacrifices, your tithes, the contribution of your hand, your votive offerings, your freewill offerings, and the firstborn of your herd and of your flock.

You are not allowed to eat within your gates the tithe of your grain or new wine or oil, or the firstborn of your herd or flock, or any of your votive offerings which you vow, or your freewill offerings, or the contribution of your hand.

You shall eat in the presence of the Lord your God, at the place where He chooses to establish His name, the tithe of your grain, your new wine, your oil, and the firstborn of your herd and your flock, so that you may learn to fear the Lord your God always.

“You shall consecrate to the Lord your God all the firstborn males that are born of your herd and of your flock; you shall not work with the firstborn of your herd, nor shear the firstborn of your flock.

“If a man has two wives, the one loved and the other unloved, and both the loved and the unloved have borne him sons, if the firstborn son belongs to the unloved,

then it shall be in the day he wills what he has to his sons, he cannot make the son of the loved the firstborn before the son of the unloved, who is the firstborn.

But he shall acknowledge the firstborn, the son of the unloved, by giving him a double portion of all that he has, for he is the beginning of his strength; to him belongs the right of the firstborn.

It shall be that the firstborn whom she bears shall assume the name of his dead brother, so that his name will not be blotted out from Israel.

“As the firstborn of his ox, majesty is his,
And his horns are the horns of the wild ox;
With them he will push the peoples,
All at once, to the ends of the earth.
And those are the ten thousands of Ephraim,
And those are the thousands of Manasseh.”