'Fifth' in the Bible

And there was evening and there was morning, the fifth day.

And God gave ear to her and she became with child, and gave Jacob a fifth son.

Let Pharaoh do this, and let him put overseers over the land of Egypt to put in store a fifth part of the produce of the land in the good years.

And when the grain is cut, you are to give a fifth part to Pharaoh, and four parts will be yours for seed and food, and for your families and your little ones.

Then Joseph made a law which is in force to this day, that Pharaoh was to have the fifth part; only the land of the priests did not become his.