"Assuredly, I say to you, whoever does not receive the kingdom of God as a little child will by no means enter it." - Luke 18:17
The blessed Elder Paisios (+ 1994) talked about a simple monk with a heart of a small child. This monk, believing that the "Holy Ascension" (Αγία Ανάληψη) was a holy woman, such as Saint Paraskevi (literally translated as Saint Friday), said the following in prayer: "Saint Ascension, if only we had fish today!" His prayer was answered by "Saint Ascension" and a fish was brought to him.
One illiterate nun from a village in Corinth would say: "Holy God, Holy Weather, Holy Death, have mercy upon us" (Άγιος ο Θεός, άγιος ο καιρός, άγιος ο θάνατος, ιλέησον ημάς), confusing the words of the prayer. Yet when she would pray this, her face sparkled!
A simple mother said to the priest of a village: "My Father, I brought my child for you to read a prayer, because it has no appetite!" And he recited the prayer for the "opening of a well"! And the child's appetite was "opened"!
True simple faith!