'Chasm' in the Bible

For there is nothing trustworthy or reliable or truthful in what they say;Their heart is destruction [just a treacherous chasm, a yawning gulf of lies].Their throat is an open grave;They [glibly] flatter with their [silken] tongue.

And besides all this, between us and you [people] a great chasm has been fixed, so that those who want to come over from here to you will not be able, and none may cross over from there to us.’