David was NOT bipolar, nor was he schizophrenic! I share that because a lot of people sincerely believe he was. He can be found in one Psalm living in awe, wonder, and joy at the love and care of God, and then in the very next Psalm claiming that God had deserted him and heralding that he longs to die! This diametrically opposed behavior continues throughout the Psalms, but I would hesitate greatly to say he was bipolar.
No, I believe he was the “total man” – after all, he was the man after God’s own heart.
Allow me to explain. There are two kinds of life given in the New Testament. There is "biaos", from which we get "biography". It is a word used for "life as man lives it!" I would define it as experiencing and expressing the life of man with the resources of man. Then, there is "zoe", meaning "life as God lives it", Life lived out of the resources of God.
My personal conviction is that David lived genuinely in both those lives and very often did so at the same time, just as we often do! The "biaos" life, though it can be good, can also be very hurtful, and full of loss and suffering because of the existence of sin and the enemy.
On the other hand, there is "Zoe" life made available to us at the moment of faith, where we can experience life as God lives it while at the same time experience life as man lives it in a fallen world.
In other words, we can be found in tears over a great loss, while at the same time experiencing triumph in those tears because God is meeting us in that moment with all that He is!
Oh, and by the way, David is not alone. The charge could also go against Paul, who was in such trouble that he despaired of life in II Cor 1, yet he could also say to the Philippians, "rejoice always, and again I say rejoice!"
And please don’t forget our Jesus, Who was experiencing such trouble he sweated blood in the garden, while at the same time experiencing the Father’s will and approval of Who He was and where He was going.
The world needs such real men, who do not offer plastic façades that everything is ALWAYS going great. The world needs men who will be honest about their pain, and their genuine experience of resurrection power.
I would describe the true Christian Life as the experience and
expression of the agony, and the ecstasy, simultaneously being lived out.