All the first-born males that come from your herd and from your flock, you shall set apart to Jehovah your God. You shall do no work with the first-born of your bull, nor shear the first-born of your sheep.

You shall give him the first-fruit of your grain, of your wine, and of your oil, and the first of the fleece of your sheep.

then it shall be in the day when he makes his sons to inherit what he has, he may not cause to inherit the son of the beloved first-born before the son of the hated one, he who is truly the first-born.

But he shall acknowledge the son of the hated as the first-born by giving him a double portion of all that he has. For he is the beginning of his strength. The right of the first-born is his.