Genesis 37:36

Now, the Midianites, sold him into Egypt, - to Potiphar courtier of Pharaoh, chief of the royal executioners.

Genesis 37:28

And there passed by certain Midianites travelling merchants, so they drew forth and uplifted Joseph out of the pit, and sold Joseph to the Ishmaelites, for twenty pieces of silver, - and they brought Joseph into Egypt.

Genesis 40:4

And the chief of the royal executioners charged Joseph with them and he waited upon them, and they were some days in ward.

Genesis 25:1-2

And Abraham took another wife and her name, was Keturah;

Genesis 39:1-23

Now, Joseph, was taken down to Egypt, - and Potiphar, courtier of Pharaoh, chief of the royal executioners, an Egyptian bought him, at the hand of the Ishmaelites, who had brought him down thither.

2 Kings 25:8

And, in the fifth month, on the seventh of the month, the same, was the nineteenth year of King Nebuchadnezzar king of Babylon, came Nebuzaradan, chief of the royal executioners, servant of the king of Babylon, to Jerusalem;

Esther 1:10

On the seventh day, when merry was the heart of the king with wine, he commanded Mehuman, Biztha, Harbona, Bigtha, and Abagtha, Zethar and Carcas, the seven eunuchs who were waiting before King Ahasuerus, -

Isaiah 56:3

And let not the son of the foreigner, who hath joined himself unto Yahweh, speak, saying, Yahweh, will separate, me from his people, Neither let the eunuch, say, Lo! I, am a tree dried up!

Treasury of Scripture Knowledge

Summary

And the Midianites sold him into Egypt unto Potiphar, an officer of Pharaoh's, and captain of the guard.

Bible References

The midianites

Genesis 37:28
And there passed by certain Midianites travelling merchants, so they drew forth and uplifted Joseph out of the pit, and sold Joseph to the Ishmaelites, for twenty pieces of silver, - and they brought Joseph into Egypt.
Genesis 25:1
And Abraham took another wife and her name, was Keturah;
Genesis 39:1
Now, Joseph, was taken down to Egypt, - and Potiphar, courtier of Pharaoh, chief of the royal executioners, an Egyptian bought him, at the hand of the Ishmaelites, who had brought him down thither.