Is airspace considered an area where a flying item could be viewed "at rest"? Applications to kabbalat hadam and interrupting between head and hand tefillin

What do kohanim wear on their feet while performing the service of the Beit Hamikdash? What about visitors (non-kohanim)?

Do kohanim need to be standing when they recite the blessing of the kohanim? What about the congregation?

Was the kiyor a holy vessel in the Beit Hamikdash or did it have a different status?

Can the kohen wash his hands and feet with a plain old washing cup?

The deeper implications and purpose of the kohanim washing their hands and feet before the daily service in the Beit Hamikdash

May a person who is sick wear a hat between their tefillin and their head?

The garments are a symbol of serving Hashem and the Beit Hamikdash

May a regular kohen perform the service of Yom Kippur instead of a Kohen Gadol?

Understanding why the kohen gadol must keep working in the Beit Hamikdash even upon learning about the death of a close relative.