'Altar' in the Bible

Therefore if you are presenting your offering at the altar, and there remember that your brother has something against you,

leave your offering there before the altar and go; first be reconciled to your brother, and then come and present your offering.

And, ‘Whoever swears by the altar, that is nothing, but whoever swears by the offering on it, he is obligated.’

You blind men, which is more important, the offering, or the altar that sanctifies the offering?

Therefore, whoever swears by the altar, swears both by the altar and by everything on it.

so that upon you may fall the guilt of all the righteous blood shed on earth, from the blood of righteous Abel to the blood of Zechariah, the son of Berechiah, whom you murdered between the temple and the altar.