The introductory part presents anthropological reasons provoking the need for the proof of God as an unworldly Being, independent of human consciousness. According to the author, this need arises in a young human, in the first immediate contact with death, when the child's conception of a world in which there is neither ageing nor death, is falling apart.
The existence of God, if rationalized, is one of the possible (according to the author the only thought-consistent) reaction to this situation. In the second part, the author paves the way for making his own argument.
Through critical analysis of Frege's concept of existence, it is demonstrated that 1) existence is first level predicate and 2) that its stating is not trivial, because the universe of discourse can be differentiated from the perspective of the existence of individuals. The concluding part, which is the very core of the work, contains a demonstration of cosmological argument for God's existence through the method of contemporary analytical philosophy.
Finally, the author also deals with the famous critiques of this argument, mainly with those by Hume and Russell.