Children’s literature has been considered to be one of the finest tools to influence children, therefore it is not strange that institutions such as the church or its devotees decide to spread their thoughts through this kind of literature. The following paper will analyse and compare the portrayal of Christianity and the figure of God in both the first novels of His Dark Materials and The Chronicles of Narnia. Since the authors of these texts, Philip Pullman and C.S. Lewis, differ in terms of the understanding of religion, I intend to investigate and establish the techniques utilized by both authors to capture their perspectives regarding religion and faith. The analysis is expected to corroborate that C.S. Lewis’ novel is highly influenced by Christianity and predicates its values while Pullman’s novel transmits an antireligious image supported by science and that his novels are written as a response to Lewis’ ones.