The dictionary describes complacence as self-satisfaction, complaisance (going along with the way things are), and unconcern (lack of care or interest, indifference).
Revelation 3:15-21 NKJV
“I know your works, that you are neither cold nor hot. I could wish you were cold or hot. So then, because you are lukewarm, and neither cold nor hot, I will vomit you out of My mouth. Because you say, ‘I am rich, have become wealthy, and have need of nothing’–and do not know that you are wretched, miserable, poor, blind, and naked– I counsel you to buy from Me gold refined in the fire, that you may be rich; and white garments, that you may be clothed, that the shame of your nakedness may not be revealed; and anoint your eyes with eye salve, that you may see. As many as I love, I rebuke and chasten. Therefore be zealous and repent. Behold, I stand at the door and knock. If anyone hears My voice and opens the door, I will come in to him and dine with him, and he with Me. To him who overcomes I will grant to sit with Me on My throne, as I also overcame and sat down with My Father on His throne.”
Complacency grows out of a false sense of security and it will eventually lead to a lukewarm relationship with God. Many in the body of Christ are satisfied with the status quo – they don’t want change, or they don’t see a need to change. People have become self-satisfied and half-hearted. Left unchecked complacency can eventually destroy a person..
Proverbs 1:32 NKJV
“For the turning away of the simple will slay them, And the complacency of fools will destroy them…”