“If your depression, your sadness, is longer than brief, it starts to become your very dangerous enemy.
Many people don’t realize what a threat sadness is — and any danger which is unrecognized as a danger is all the more dangerous. There is no stigma against sadness. There is no embarrassment, no alarm, no rushing to the Lord to eliminate it.
But God’s Word says, “The joy of the Lord is your strength” (Nehemiah 8:10).
And when a Christian is sad — whether he realizes it or not, his power is diminished and he’s vulnerable.
A country that has internal unrest is the least able to resist any threatening foreign power. And a believer with sadness inside is the least able to resist any attack of Satan.
Depression is a sinister “fifth column” at work within the Christian community.”
-from p.38 of “Fix Your Eyes On Jesus” by Anne Ortlund.