Personalism is a philosophical school of thought focused on thorough considerations around the human being. A few types and branches of personalism can be distinguished, for example by country of origin and development of thought, or by the analysis of different elements that constitute a human being. On Polish ground, it is the teaching of St. John Paul II that deserves particular attention. On the basis of a specific view on human beings in their integral and social dimension, personalism formulates a characteristic vision of marriage and family. It emphasizes the understanding of family as a community of people, it teaches of the specificity of a relationship between a man and a woman, which leads to a traditional way of defining marriage and family. Consideration of biological, psychological and spiritual dimensions of the functioning of a human being triggers a complex approach towards family. This means that it is the basis for determining rules of psychological and spiritual establishment of marriage and family bonds. It also concerns the way of raising children, at the same time becoming a special place for personal upbringing. Reminding and promoting the abovementioned understanding of family can be a means of preventing threats of the modern world. This means that it can prevent the destruction of a family, as well as any attempts to redefine marriage and family – present in current social reality. It can influence the process of supporting marriage and family with regard to appropriate communication, dealing with marriage crisis and with upbringing children. The way to perform those preventive and supporting actions should first of all be the period of preparation for marriage, in a broad and direct aspect. Apart from that, including it in the constant formation of families may constitute a specific form of protection.