What is the symbolism in the blessing over the [[Kos shel Brakha]] after [[Seuda Shlishit]] [[Hitveadut]] ([https://en.m.wikipedia.org/wiki/Tish_(Hasidic_celebration) Tish]) for [[Havdalah]] on [[Motzei Shabbat]]?
Your Rebbe has decreed for you that this blessing is to be regarded as the toast of the [[Brit Chadasha]] for the sake of which he made [[Kiddush HaShem]]. Anyone who makes this toast is in the Brit Chadasha. The sages taught us that the blessing over the Kos for Havdalah is guaranteed to merit you a place in [[Olam HaBa]]. It is the substitute for [[Toda'ah ]] offerings in the [[Beit HaMikdash]] according to the Brit Chadasha.
It means as long as you give thanks for the Shabbat then you are in the Brit Chadasha and your sins will be forgiven (you are merited a place in the world to come).
That is why you should want the shirayim after Shabbat and the blessing over the cup is finished. Because you are immediately putting yourselves in the mode of longing for Shabbat.
'''To long for the Shabbat is Yesod''', and Yesod is the true body of Metatron who is the flesh of God's Name([[Ben Adam Kadmon]]. If you "long for Sabbath all week" (placing shirayim in a [[Jewish Monstrance]]) it will help you prepare better for the coming Sabbath and will encourage you to do positive [[mitzvot]]!
And if you say Havdalah to sanctify the end of the Sabbath with thanksgiving your offering is accepted and your sins in neglecting the negative mitzvot are forgiven.
