Genesis 48:18

He said to his father: That is not right, Father! This is the firstborn. Put your right hand on his head.

Oh no, my lords, please, Lot begged.

Then she took Esau's best clothes and dressed Jacob in them.

Laban answered: It is not our custom to give the younger daughter in marriage before the older one.

To the surprise of Joseph's brothers, they were seated in front of him according to their ages, from the oldest to the youngest.

Reuben, you are my firstborn; you are my strength and the first child of my manhood. You are the proudest and strongest of all my sons.

Not so! You men go now and serve Jehovah. It is you who desired it. So they were driven out from Pharaoh's presence.

But the wise answered: 'There will not be enough for both of us. Go to the dealers and buy oil for yourself.'

But Peter said: No Lord for I have never eaten any thing that is defiled or unclean.

I said, 'No Lord, for nothing defiled or unclean has at any time entered into my mouth.'

Treasury of Scripture Knowledge

And Joseph said unto his father, Not so, my father: for this is the firstborn; put thy right hand upon his head.