Rabbi Hiya opened [his discourse] with: "he ordained it for Joseph for testimony. (Psalms 81:6) We have learnt [the angel Gabriel] taught Joseph seventy languages1 [likewise to Pharaoh] but [Joseph knew] an extra language, the Holy Tongue [which Pharaoh didn't know]. This is what is meant by "I heard languages that I had not known".

According to this, what is "testimony"? Come and see: When Potiphar's wife took hold of him to seduce him, Joseph made himself as one who did not know her language, and so it was each day until the last moment, as it is written: "And she caught him by his garment [in Hebrew, 'bevigdo'] ." (Gen. 39:12) What is the meaning of "she caught him"? Until that time he had pretended that he did not know her language. But then she realized that he understood her intent and this is what is meant: "she caught him in his deception." [in Hebrew, 'bevgidato'].

"she caught him in his deception."

And the Divine Spirit [malchut] cried out to him, "that they may keep you from the strange woman, from the alien woman who makes smooth her words." (Prov. 7:5) What is this trying to teach us here? Everyone who keeps himself from such a thing [as Joseph did] is bound up with the Shechinah and connected to this testimony [malchut]. And which is it? This is the Hei that was added to [Joseph's name] as it is written: "This he ordained in Jehoseph for testimony."

Also here, a Yud [standing for malchut] was added to Pinchas' name because he was zealous over the same matter [of Zimri's illicit sex].

BeRahamim LeHayyim:
Oh, when will I merit to bond with Divine Presence. The trick is to stay in the Holy place, the place where we are imbued with His Divine Name through righteous actions. ALWAYS!!! Easier said than done. so be good and do good, for goodness' sake (for the Honor of Heaven)! The characters of David and Joseph and their life trials are offered to us as case studies on how to successfully deal with negativity. It is submitted that a review of their stories and character-building is oh so worthy an activity. Bless you in your study!

[Bracketed annotations from Metok Midevash and Sulam commentaries]