He must acknowledge the firstborn, the son of the unloved wife, by giving him two shares of his estate, for he is the firstfruits of his virility; he has the rights of the firstborn.
This is what the Lord God says: “This is the border you will use to divide the land as an inheritance for the 12 tribes of Israel. Joseph will receive two shares.
1 Samuel 1:5
But he gave a double portion to Hannah, for he loved her even though the Lord had kept her from conceiving.
2 Kings 2:9
After they had crossed over, Elijah said to Elisha, “Tell me what I can do for you before I am taken from you.”So Elisha answered, “Please, let me inherit two shares of your spirit.”
After Job had prayed for his friends, the Lord restored his prosperity and doubled his previous possessions.
On the sixth day, when they prepare what they bring in, it will be twice as much as they gather on other days.”
On the sixth day they gathered twice as much food, four quarts apiece, and all the leaders of the community came and reported this to Moses.
Understand that the Lord has given you the Sabbath; therefore on the sixth day He will give you two days’ worth of bread. Each of you stay where you are; no one is to leave his place on the seventh day.”
Because your shame was double,
and they cried out, “Disgrace is their portion,”
therefore, they will possess double in their land,
and eternal joy will be theirs.
Return to a stronghold,
you prisoners who have hope;
today I declare that I will restore double to you.