Knjiga Postanka ističe da je Bog stvorio čovjeka na svoju sliku i povjerio mu brigu za svijet da nastavi njegovo djelo stvaranja. Međutim, grijehom je čovjek iznevjerio povjerenu mu zadaću i u svojoj oholosti narušio svoj odnos prema Bogu, bližnjemu i prirodi. Paradoksalno je da je čovjek tim činom zapravo ponajviše naštetio samom sebi jer grijeh u sebi uvijek ima razarajuću snagu i po naravi narušava cjelokupne čovjekove odnose. Polazeći od antropologije grijeha, a u svjetlu enciklike Laudato si', u ovom radu želimo pobliže prikazati konkretne grijehe i njihove razorne posljedice. One se očituju u grešnim postupcima prema Bogu, bližnjemu i prirodi, a očituju se, prije svega, kao ekocid, kulturocid, grijeh protiv pravednosti i međugeneracijske solidarnosti, odnosno, općenito kao grijeh protiv ljudske ekologije koji je izravno usmjeren protiv dostojanstva ljudske osobe. Grijesi protiv prirode nisu, naime, ništa manje teški od grijeha protiv Boga i čovjeka. Naprotiv, čine jednu nerazdvojnu cjelinu te se u zadnjem djelu rada posebno ističe važnost ekološkog obraćenja, budući da ga papa Franjo predlaže kao jedini put izlaska iz nastale krize i put kojim se čovjek može izliječiti od slijepe oholosti te na taj način ponovno preuzeti odgovornost za svijet koji mu je Bog povjerio na čuvanje. The book of Genesis points out that God created man in his own image and entrusted him with the care of the world to continue his work of creation. However, through sin, man failed the task entrusted to him and in his haughtiness infringed his relationship with God, his neighbour and nature. It is paradoxical that by this act, man actually harmed himself the most, because sin always has a destructive force in it and by its very nature destroys all of man's relationships. Starting from the anthropology of sin, and in the light of the encyclical Laudato Si', in this paper we want to take a closer look at concrete sins and their devastating consequences. They are manifested in sinful actions towards God, neighbour and nature, and they are manifested, first of all, as ecocide, culturocide, a sin against justice and intergenerational solidarity, or, in general, as a sin against human ecology that is directly aimed at the dignity of the human person. Sins against nature are no less serious than sins against God and man. On the contrary, they form an inseparable entirety, and in the last part of the paper, the importance of ecological conversion is especially pointed out, since Pope Francis proposes it as the only way out of the present crisis and the way by which man can be cured of blind arrogance and in this way take responsibility for the world again which God entrusted to his care.