Before I knew what slavery to sin was or what sin meant, there was a time when I had never heard of these words or ideas, that was high-school up until 2nd year University (2007). I was 20 years old and I didn't know that I was a sinner and that I was enslaved to sin and yet knowing something is wrong and without understanding it, kept me going deeper and deeper into reckless behavior and self destruction and the big word of today, depression.
I believe the Lord helped me understand that when we are slaves to sin it is the natural outcome that we become depressed. We are conscious that something is wrong even though we may not realize it and may not understand it and have no concept of sin or that we are in bondage to sin and this is our plight, this is depression, it is slavery to sin.
You can be trapped and know something is wrong but not know that you are trapped because that has never been revealed to you.
There are of course those who are trapped and slaves and feel no concern, in fact they feel at home in darkness and that is their delight, or else have become hardened to the point where there is no thought or bothering anymore.
I think this really puts a spotlight on the discussion about depression, if you see it in the light of how none of us are immune to sin and that in relation to sin there is only bondage and slavery, there is no friendship, only for those who feel at home in darkness.
Otherwise, you may not know it but you are a slave to sin, and that realization, even before you are aware of it and understand it, is the cause of depression.
And even when you are, for even believers can submit to sin and fail to submit fully to Christ and become enslaved to sin, which in the same way will not bring happiness which comes with walking in freedom from sin and joy in that freedom in Christ.
And so believers, those who are in Christ and have freedom can experience depression when they fail in some way or ways to submit to Christ and what He asks of them and therefore become slaves of sin through unrepentance and not conforming to walking with Christ.
2 Peter 2:19
They promise them freedom, but they themselves are slaves of corruption. For whatever overcomes a person, to that he is enslaved.
(this falls under the Doctrine of Sin)
