'Altar' in the Bible

So if you are presenting your offering at the altar, and while there you remember that your brother has something [such as a grievance or legitimate complaint] against you,

leave your offering there at the altar and go. First make peace with your brother, and then come and present your offering.

And [you scribes and Pharisees say], ‘Whoever swears [an oath] by the altar, that is nothing (non-binding), but whoever swears [an oath] by the offering on it, he is obligated [as a debtor to fulfill his vow and keep his promise].’

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

Therefore, whoever swears [an oath] by the altar, swears both by it and by everything [offered] on it.

so that on you will come the guilt of all the blood of the righteous shed on earth, from the blood of righteous Abel to the blood of Zechariah [the priest], the son of Berechiah, whom you murdered between the temple and the altar.