The moral of the tale: "Speak less, think more," "The conjecture is no worse than reason," "With the mind is conceived, but without mind is made," "It is easy to boast, it will easily fall down."
In the fairy tale there are repetitions of phrases such as "Kolobok, I'll eat you", "Do not eat me, I'll sing you a song". Also the song of the kolobok is repeated.