Contemporary knowledge about God, Evolution, and the meaning of human life.
Methodology of spiritual development.
Agni Yoga/Hard Karma
The life of many people on the Earth is full of suffering. However, it is their destiny (karma) created by the ethical mistakes which they made in the contemporary life or in the past lives. This situation is favorable for them to begin seeking the way out of the desperate situation and thus to begin changing themselves. If one does not do this, the situation gets worse.
“… Human souls go through the ‘purgatory’ on the Earth.” 
(Another possible reason for our afflictions is God’s using them as a means for pointing out to His students a necessity for a radical change in their “course of life” ).
In any case — during whatever calamity and affliction — one has to heed the guidance of God more than usual, to get rid of one’s lower self, and try to stay closer to Him.
“One must understand that imperil (the psychic energy of hatred, anger) and coarse worldly desires produce severe ulcers… Ulcers of the spirit are carried over to the other world if they are not healed on the Earth. Liberation from the material body does not mean deliverance from spiritual ulcers.” 
“Forces serving the Light do not interfere with one’s karma, as some who are not aware of the power of karma believe. The Forces of Light observe human actions, suggesting the direction yet not interfering with life.” 
Only those spiritually ignorant become embittered by earthly suffering, thus dooming themselves to hell .
Liberation from the shackles of hell is achieved through repentance (conscious regret about misdeeds, its purpose is to learn to avoid repeating mistakes), through the work on growing positive qualities in oneself and approaching God. They who achieved with their developed spiritual hearts the Mergence with the Divine Fire become fully liberated from their bad karma.
God says: “I am the best Help to you!” [40:Leaves of Morya’s Garden. Call].
The best remedy for all afflictions is Mergence with Him. If we stay in this Mergence, we have His Shield. “All dangers are trifling. Even an encounter with strong dark entities is not dangerous if one maintains a firm connection with the Hierarchy!” [40:Heart]
In order to come to the Mergence, one has to wage war, the war against one’s own imperfections.
“Let people realize (now) the surrounding danger. … Life in the subtle world (between incarnations) is incomparably longer. One has to be prepared for it!” [40:AUM]
“… It is terrible to be afraid of the Light, because the Fire turns then into a devouring flame!” [40:AUM]
“It is so difficult for people to say the simplest law: ‘Blessed are the obstacles — thanks to them we grow.’ People admit tests easily until encountering them. No one is willing to quicken his or her advancement through obstacles!
“It is still more intolerable to humanity to hear about the usefulness of suffering. The reason is not that people fear pain or discomfort, but that they cannot think of a life beyond earthly existence! They are ready to suffer the discomfort of an overnight stay for the sake of tomorrow's celebration, but they do not want to contrast the earthly life with the Infinity!
“Fear of the Infinity is the most shameful manifestation of a thinking being!” [40:AUM]