'Gift' in the Bible

"So if you are presenting your gift at the altar and remember there that your brother has something against you,

leave your gift there before the altar and first go and be reconciled to your brother. Then come and offer your gift.

Again you say, "Whoever swears an oath by the altar is excused, but whoever swears by the gift that is on it must keep his oath.'

You blind men! Which is more important, the gift or the altar that makes the gift holy?