9:27 once to die. Enoch and Elijah seem to have been exceptions to this principle (Genesis 5:24; II Kings 2:11), but they will probably return to the earth in the last days, and then die (see notes on Revelation 11:3-12). There will be one great exception, of course, for the saints living on earth when Christ returns (I Corinthians 15:51-53), but all (even those who will be living at that time) must prepare for death, for no one can be sure he will not die before Christ comes.