The Faithless keeps sleeping while the Ready keeps wide awake getting prepared

When people are saying, All is well and secure, and, There is peace and safety, then in a moment unforeseen destruction (ruin and death) will come upon them as suddenly as labor pains come upon a woman with child; and they shall by no means escape, for there will be no escape.

Accordingly then, let us not sleep, as the rest do, but let us keep wide awake (alert, watchful, cautious, and on our guard) and let us be sober (calm, collected, and circumspect).