'Perish' in the Bible

They shall perish; but thou remainest; and they all shall wax old as doth a garment;

Let us therefore make every effort to enter that rest [of God, to know and experience it for ourselves], so that no one will fall by following the same example of disobedience [as those who died in the wilderness].

But we are not among those who shrink back and thus perish, but are among those who have faith and preserve their souls.

By faith Rahab the prostitute received the spies in peace and didn’t perish with those who disobeyed.