The relationship and coexistence of the media and the Church is a dynamic process that has grown over the years from mistrust and restraint towards the media into a relationship of mutual enrichment and cooperation. Three significant turning points occurred in the relationship between the Church and the media - the encounter with the printed media, the encounter with the electronic media, and the encounter with the Internet, namely, the new media, that the Second Vatican Council paved the way for. The Church has recognized the media as an indispensable mean for announcing the Gospel, whether it is the first encounter with the Gospel, catechesis, or the deepening of the faith. The Church has joined the “new forum for the proclamation of the Gospel” and “put out into the deep” of Internet networks. The Church has made it clear many times and in many ways that the use of media, especially new ones, for evangelization is not questionable, but the challenges of proclaiming the Gospel through new media show that the right way and language for the digital environment must be found. Looking at today's digital landscape, a video shared online, especially through the YouTube platform, offers a fruitful area for evangelism. Today, YouTube is filled with channels where priests, monks, nuns, and laics evangelize, spread the Gospel, and share their testimonies with others. For this thesis, the research was conducted on evangelization on the YouTube platform. The research was conducted on two YouTube channels of two evangelistic platforms - the American platform Ascension Presents and the Croatian platform Nova Eva. The goal was to investigate and compare how one American and one Croatian platform use YouTube for evangelization, and to assess where the Croatian platform Nova Eva stands in relation to Ascension Presents - does it use the advantages and possibilities of YouTube or does it have room for improvement.