The author solves the problem of relationship between an act of faith and its content on three following levels: 1) faith which is 'concealed' inside an individual and not articulated; 2) faith expressed, e.g. with human languages; 3) faith that is justified. On each of them we observe a connection between 'fides qua' and 'fides quae'. Simultaneously, these two categories are autonomous. Those who believe in God have to connect their faith with its content.