In Bereshis 39:20 Joseph's master puts him in jail, there termed בית הסהר. In chapter 40 we have (v3,4)
וַיִּתֵּן אֹתָם בְּמִשְׁמַר, בֵּית שַׂר הַטַּבָּחִים--אֶל-בֵּית הַסֹּהַר: מְקוֹם, אֲשֶׁר יוֹסֵף אָסוּר שָׁם וַיִּפְקֹד שַׂר הַטַּבָּחִים אֶת-יוֹסֵף, אִתָּם--וַיְשָׁרֶת אֹתָם; וַיִּהְיוּ יָמִים, בְּמִשְׁמָר
There are a few things I don't understand about this
- what is the difference, if any between בית הסהר and מִשְׁמָר
- Why is the head butcher in charge of the jail?
- Isn't the head butcher Potiphar (37:36)? If so why would he put Yosef in charge of the jail if he just jailed Yosef for abusing the privilege of being in charge of his home?