The thesis follows the assumption that societal change is carried out by the human agency, so are law and religion as well. The work attempts to show that both Daesh and selected Islamic preachers conduct a form of jihad. The former combative jihad, the latter by mouth on social media. The analyzed scholars and Daesh are connected by two elements, first Salafism, a general term describing a number overlapping Quranic interpretations, and secondly Islam’s various notions of jihad. The author compares studies on the social media usage of the Islamic state, to compare them with content of Twitter feeds of three scholars. A genre analysis, a social network analysis of three different months, and a hashtag network analysis of the Twitter content indicate that the selected theologians use Twitter similar to a propaganda tool. It strongly hints that content mirrors professional/commercial purposes rather than follower engagement. Nonetheless, the preachers, as well as the Islamic State fully use the horizontal post­industrial network society to spread content. Based on these analyses the work argues, that social media content of the examined Muslim preachers could be considered as “greater” jihad, or conversion by mouth, one form of pursuing jihad. By showing the network based distribution of Twitter content the author concludes that Daesh pursues jihad by sword, but data analyses shows that the Salafi preachers pursue jihad by mouth and tongue.