The article is carried out a thorough, exegetical and theological analysis of the theme “the heart of Pharaoh”, which repeatedly appears in the context of Exodus 3–14. In the author’s opinion it is crucial to understand the theological message contained in this narration. The relationship between man’s free will and sovereign will of the Lord – the God of Israel, though present in the background of the story, is not a main theme of consideration. The aim of the biblical authors was rather to show that how God operates within the history and how His action relates to the historical experience of Israel in contact with the great powers of this world. This “political theology” also contains an instruction directed to individuals. Each “stubborn” human heart, sooner or later, will bring negative consequences for those who do not read in time marks given to him by God and for those who wishes to oppose His will.