Alertness is sensitivity, attentiveness. It is the ability to look, to see, to notice, to observe. An alert person is wide awake to everything around him. Though every kind of alertness is valuable, spiritual sensitivity is the most desirable.
Survival depends on alertness.
If you are not alert to dangers, you will be destroyed. On the expressway, you must be aware of the cars in front of you, behind you, and on both sides, or you may lose your life. Our success depends on our alertness. We must be sensitive to opportunities before they disappear. We should be alert to opportunities to witness for Christ, sensitive to speak to people who are spiritually open, looking for prospects for our Bible classes and church services.