how shall we escape the penalty for neglecting a salvation which was originally proclaimed by the Lord himself and guaranteed to us by those who heard him,
See that you do not refuse to listen to His voice. For if they failed to escape, who refused to listen to their instructor upon earth, much less shall we escape, if we discard Him who speaks from heaven.
that is, if you adhere to the foundations and stability of the faith, instead of moving away from the hope you have learned in the gospel, that gospel which has been preached to every creature under heaven, and of which I Paul was made a minister.