Vigilance, I think, is an excellent word to portray the way we need to be in order to be prepared and fit to face and combat the forces of evil in this world. One who is vigilant, therefore, is one who is alert or watchful; thus he is able to stay awake (while praying), and is self-controlled. He is also one who feels more “real”, more alive, and thus more in touch with what is real—God and heaven.
I use to think of heaven as a dream world. I thought that when I died, and if I went to heaven, it would be just like falling asleep into a dream world, that it would be black and white and sort of fuzzy, people moving around in slow motion, like spirits floating from place to place. But that is not what heaven is like at all. Heaven is a place without sin; and without sin we will be more alive, more alert, and more real than we know reality to be right now. No, heaven won’t be fuzzy or black and white. We will see all the colors of the rainbow more clearly than we have ever seen anything before. Why? Because all things will be new, and we will have new bodies. Yes, we will be truly vigilant!
In contrast, it also follows that when we give ourselves to sin and follow dead idols we will become just like them. As Psalms 115:8 states about idol worshipers: “Those who make them will become like them, everyone who trusts in them” (NASB). Jamison, Fauset, and Brown comments well on this verse:
No people or individuals rise in character higher than their gods. Each man is as his god is. The servant of the all-gracious God partakes of the divine nature (2 Pt. 1:4), His holiness and righteousness (Eph. 4:24, Heb. 12:10, 1 Jn. 3:2), being changed more and more into the same image (2 Cor. 3:18). The servant of corrupt gods, whether material images or the idols of self, carnal imaginations, and pride of intellect, becomes debased like his idol.
I would add also, that, since an idol is dead and lifeless, he also becomes that way, and thus, without vigilance.
So it behooves us—if we want to partake of the divine nature, to feel more alive, and to be well prepared to battle evil—to set our mind to find vigilance.