Inspired by this questionthis question.
When we call up a Kohen (or when not present, a Levi or Yisrael) we use a special formula: ויעזר on Shabbat and yom tov (Shacharit) and ותיגלה on weekdays (and Minchah). In it, we request that the Kohen comes closer (relevant portion quoted from here):
כּהֵן קְרָב יַעֲמד (פלוני ב' פלוני) הַכּהֵן. בָּרוּךְ שֶׁנָּתַן תּורָה לְעַמּו יִשרָאֵל בִּקְדֻשָּׁתו:
Why do we ask the Kohen to come closer קרב but subsequent 'aliyot do not have such formulations?
