Complex sentence: After receiving a mystical vision, he decided to devote himself entirely to the contemplative life, and in 1467 he left his wife and his ten children with her consent and set himself up as a hermit in the Ranft valley in Switzerland.
Split into simpler sentences: After receiving a mystical vision, he decided to devote himself entirely to the contemplative life. In 1467, he left his wife and his ten children with her consent and set himself up as a hermit in the Ranft valley in Switzerland.