In the sphere of Islamic mysticism and Christian mysticism, there have always been famous mystics who have looked at the universe from the perspective of unity, and have considered their mystical insights based on monotheism as a basis for tolerance in dealing with others. Two Muslim and Christian mystics "Mohammad Dara Shikoh" and "Jakob Böhme" are among the influential scholars in this field. Accordingly, this article sought to investigate what tolerant behavioral system based on the mystical insights of these two mystics can be deduced from their words. Having used a descriptive-analytical approach and qualitative content analysis, this study extracted insights such as unity of existence, the flow of love in existence, monotheism in property, monotheism in worship, participation in creation, etc., from among the foundations of ontology, anthropology and salvation in the works of Mohammad Dara Shikoh and Böhme. Moreover, values ​​such as human dignity, the possibility of loving human beings, the trustworthiness of possessions, etc. were presented based on these insights. These insights and values ​​themselves resulted in tolerant behaviors and actions such as self-sacrifice, benevolent behavior, love, humility, etc., which are the best examples for peaceful coexistence in the contemporary world.