Focus on this artwork and discuss the Spiritual significance.
As a young man, van Gogh considered pursuing ministry to serve working people.  He studied for a time in the Netherlands but his zeal and self-imposed asceticism cost him a short-term position in lay ministry. He became somewhat embittered and rejected the church establishment, yet found a personal spirituality that was comforting and important to him.  By 1879, he made a shift in the direction of his life and found he could express his "love of God and man" through painting.Van Gogh painted nature, the major subject for his works in the last 29 months of his life, to bring relief from his illnesses and emotional distress. Prior to this period he had rejected what he perceived as the narrow religion of his parents, and took an almost nihilistic stance, not unlike Nietzsche's, toward religion and God.  It was among the blossoming trees, the olive orchards and fields that van Gogh most often found "profound meaning", because he saw in their cycles an analogy to human life.  He wrote to Theo that death, happiness and unhappiness are "necessary and useful" and relative, declaring "Even faced with an illness that breaks me up and frightens me, that belief is unshaken."
The autumn work was somewhat in reaction to the recent compositions of Christ in the Garden of Olives by his friends Paul Gauguin and Émile Bernard.  Frustrated by their work which he qualified with the words "nothing was observed", Van Gogh painted "in the groves, morning and evening during these clear, cold days, but in beautiful, bright sunshine" resulting in five canvases above the three he completed earlier in the year. He wrote to his brother, Theo, "What I have done is a rather hard and coarse reality beside their abstractions, but it will have a rustic quality and will smell of the earth."  Rather than attempting to recreate what the scene might have been like, he explained "one can express anguish without making reference to the actual Gethsemane, and... there is no need to portray figures from the Sermon on the Mount in order to express a gentle and comforting feeling."  He also commented: "I shall not paint a Christ in the Garden of Olives, but shall paint the olive harvest as one might see it today, and by giving the human figure its proper place in it, one might perhaps be reminded of it."
nihilistic Theo Émile Bernard right asceticism Paul Gauguin Nietzsche