Deuteronomy 21:16

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.

1 Chronicles 26:10

Also Hosah, one of the sons of Merari had sons: Shimri the first (although he was not the firstborn, his father made him first),

1 Chronicles 5:2

Though Judah prevailed over his brothers, and from him came the leader, yet the birthright belonged to Joseph),

2 Chronicles 11:19-22

and she bore him sons: Jeush, Shemariah and Zaham.

2 Chronicles 21:3

Their father gave them many gifts of silver, gold and precious things, with fortified cities in Judah, but he gave the kingdom to Jehoram because he was the firstborn.

Romans 8:29

For those whom He foreknew, He also predestined to become conformed to the image of His Son, so that He would be the firstborn among many brethren;

Philippians 4:8

Finally, brethren, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if anything worthy of praise, dwell on these things.

Hebrews 12:16-17

that there be no immoral or godless person like Esau, who sold his own birthright for a single meal.

Treasury of Scripture Knowledge

Summary

Then it shall be, when he maketh his sons to inherit that which he hath, that he may not make the son of the beloved firstborn before the son of the hated, which is indeed the firstborn:

Bible References

General references

1 Chronicles 5:2
Though Judah prevailed over his brothers, and from him came the leader, yet the birthright belonged to Joseph),
1 Chronicles 26:10
Also Hosah, one of the sons of Merari had sons: Shimri the first (although he was not the firstborn, his father made him first),
2 Chronicles 11:19
and she bore him sons: Jeush, Shemariah and Zaham.
2 Chronicles 21:3
Their father gave them many gifts of silver, gold and precious things, with fortified cities in Judah, but he gave the kingdom to Jehoram because he was the firstborn.
Romans 8:29
For those whom He foreknew, He also predestined to become conformed to the image of His Son, so that He would be the firstborn among many brethren;
Philippians 4:8
Finally, brethren, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if anything worthy of praise, dwell on these things.
Hebrews 12:16
that there be no immoral or godless person like Esau, who sold his own birthright for a single meal.