In this paper, we will reflect on ecology in the theological conception of Pope Francis. In the globalized world, the gap between the rich and the poor is increasing, in which a large number of people do not have the basic conditions for life. There are more and more people on the planet, especially in the poor, underdeveloped parts of the world, while the rich countries of the West and East are recording a decline in their population. Most of the pollution that affects planet Earth comes from rich countries at the expense of the poor, whose resources are often exploited, leaving those countries in even greater poverty. All this is manifested in the pollution of the Earth, which affects the poor parts of the world more than the rich. God's plan is not to destroy the common home of all people, planet Earth. If we look at the listed problems in the light of theology, then we see that the Church must deal with these problems. Caring for a common home is an opportunity for the cooperation of all people in mutual action, where togetherness for the global common good is manifested. Pope Francis grappled with the listed problems, mostly environmental problems, which the world is facing and which we will reflect on in this paper. As believers, we must ask ourselves some questions: Do we as believers have a duty to deal with environmental problems that concern all people? Is it God's will the pollution of his creation? What is the importance of nature for man and his connection with God?