Sometimes God won’t heal us. Sometimes depression teaches us humility. As satan was bound and cast out from heaven due to his pride, so to re-enter paradise we must have humility. Justification by faith alone is a heresy. I will explain below.
‘Faith without works is dead,’ James 2:17. So we need the works of faith to be saved. I remember that popular verse in Ephesians which protestants love to quote ‘we are saved by grace alone through faith, and not by works of the law, so that no one should boast.’ The works of the law St Paul was talking about was works of the Jewish law, we still need to do works of faith to enter heaven.
St John the Baptist and the Lord Jesus Christ both said at the start of their ministries ‘repent, for the kingdom of heaven is at hand.’ Repentance is a work of faith. Unless you repent to a degree of perfection, then you will not get into heaven. ‘Be ye perfect, as your Father in heaven is perfect.’ Jesus meant you HAVE to be minimally perfect to get into heaven. If your prayers don’t heal the sick, you don’t have enough works.
There are degrees of perfection, and there are degrees of sin, or imperfection. God is more perfect than the Virgin Mary. The Virgin Mary is more perfect than the cherubim and seraphim. The angels are more perfect than the 6th century Saints. The 6th century Saints were more perfect than the 19th century Saints. The 19th century Saints are more perfect than our contemporary Saints on Earth. The present day elders on Mount Athos are definitely more perfect than any Protestant!
So, since we have established that you need works to get into heaven, I will explain the source of all works, that is, ‘humility.’ Humility is the mother of all virtues. Protestants don’t have this virtue, so most of them will be turned away from the great wedding feast in heaven. Humility is not when you say to yourself that you are the worst of sinners. It is when others say you are the worst of sinners, and you accept it and bless and forgive them from the heart. No protestant can take insults or beatings like an Orthodox Saint can.
So that’s why God doesn’t necessarily fix mental illness. It is to prevent the sinner from falling into a worse sin, that is, pride. God may not heal you for the rest of your life, so your punishment in hell will be reduced, or, by a miracle only known to God, you may be accepted into heaven!