Deuteronomy 21:17

but the true firstborn the son of her that is hated, shall he treat as firstborn by giving him double out of all that is found to be his, - for, he, is the beginning of hi strength, his, is the right of the firstborn.

Genesis 49:3

Reuben, my first-born, thou, My vigour, and the first-fruit of my strength, - Pre-eminence of elevation and pre-eminence of power:

Genesis 25:31-34

And Jacob said, - Come sell, just now, thy birthright unto me.

Genesis 25:5-6

And Abraham gave all that he had to Isaac;

1 Chronicles 5:1-2

And the sons of Reuben the firstborn of Israel, for, he, was the firstborn, but because he defiled the couch of his father, his birthright was given to the sons of Joseph son of Israel, - and he is not to be enrolled in the place of firstborn,

Psalm 105:36

Then smote he every firstborn in their land, The beginning of all their strength;

Treasury of Scripture Knowledge

Summary

But he shall acknowledge the son of the hated for the firstborn, by giving him a double portion of all that he hath: for he is the beginning of his strength; the right of the firstborn is his.

The beginning

The right

Bible References

By giving

Genesis 25:5
And Abraham gave all that he had to Isaac;
1 Chronicles 5:1
And the sons of Reuben the firstborn of Israel, for, he, was the firstborn, but because he defiled the couch of his father, his birthright was given to the sons of Joseph son of Israel, - and he is not to be enrolled in the place of firstborn,

The beginning

Genesis 49:3
Reuben, my first-born, thou, My vigour, and the first-fruit of my strength, - Pre-eminence of elevation and pre-eminence of power:
Psalm 105:36
Then smote he every firstborn in their land, The beginning of all their strength;

The right

Genesis 25:31
And Jacob said, - Come sell, just now, thy birthright unto me.