We need to adopt an attitude in the Church of One for All, and All for One.
Men and women of faith and vision (e.g., Martin Luther) have been (and continue to be) plagued by bouts of depression that are NOT rooted in sin or unbelief.
Living a life of thankfulness (Php.4:6), and setting our affections on the things above (Col.3:2) are powerful weapons in our arsenal (2Cor.10:4). But we still have to wrestled against principalities and powers (Eph.6:12) that don’t fight fair.
Sometimes depressed people just need our love and support. We must be careful not to blame the victim, as Job’s comforters did (and were rebuked by the Lord). They offered simplistic solutions to complex problems!
Indeed, we are called to live a victorious life. But victory and defeat are only decided in battle. It is certainly true that, collectively, we have power over all the power of the enemy (Luke 10:19). Before the forces of evil, the Church rises as a light in the darkness, “…terrible as an army with banners.” (Song 6:10).
Corporately, we are the Church of the Living God. We are an invincible force, under the command of the Captain of the Hosts of the Lord.
But individually, we fight as soldiers. (Jesus has no Lone Rangers!) Overcoming the world, the flesh, and the devil requires that every one of us learn to “…endure hardness, as a good soldier of Jesus Christ.” (2Tim.2:3)
No soldier ever returned to the barracks in victory while his comrades-in-arms suffered defeat in the field. When a brother or sister is struggling desperately, sinking in the quicksand of despair, it is wickedness to marginalize his battle with trite slogans. Therefore, as fellow soldiers, we are commanded, “Bear ye one another’s burdens, and so fulfil the law of Christ.” (Gal.6:2) That is the Law of Love.
“We then that are strong ought to bear the infirmities of the weak, and not to please ourselves.” (Rom.15:1)