'Once for All' in the Bible

Beloved! though I was using all diligence to be writing unto you concerning our common salvation, yet have I had necessity to write at once unto you, exhorting you to be earnestly contending for, the faith, once for all delivered unto the saints.

I am minded, therefore, to put you in remembrance, - though ye know all things once for all, That the Lord, when a people out of Egypt he had saved, in, the next place, them that believed not, destroyed.