A day of Teruah it should be for you (Bamidbor 29:1). It does not say Tekyoh, Yovel, or Shofer, as it says in other places, rather a language of Rayus – companionship. That there should be peace, love, and companionship. And thru this it will be “Lohchem” (for you), for your pleasure, as it says “Lech Lecha” (Bereishis 12:1), to which Chazal explains, Lechanoschoh, Ulitovosechoh – for your pleasure and your good.
Sefer Divrei Emes (138)
See also Sefer Yalkut Zos Zikoron, on the Possuk Ohloh Elokim Bitru’oh (Tehillim 47:6), that with the “Rayus” of which one says to his friend on the night of Rosh Hashanah “Gut Yom Tov - and Lishonoh Tovoh Tikoseiv”, with this it removes the Midas Hadin (attribute of judgement) from upon the Kisei Hadin (the seat of judgement).
