for none of Abraham's posterity was yet begotten at the time of his meeting with Melchizedek.

since they have to do only with food and drink and various washings??aterial regulations in force only until the time for the new order.

All these people lived all their lives in faith, and died without receiving what had been promised; they only saw it far ahead and welcomed the sight of it, recognizing that they themselves were only foreigners and strangers here on earth.

Now the words "But once more" indicate the final removal of all that is shaken, as only created, leaving only what is unshaken to be permanent.