Abstract

The patristic period is the process that starts with the birth of Jesus and continues until the Nicean Council. Before the Nicean Council, Jesus, the only God's apostle, has gone instead of Jesus, the son of God. There was no intact Bible in the time of Irenaeus, who was among the apologists who advocated monotheism. This harsh and hard struggle of Irenaeus against those who do not accept the one God undoubtedly provides us with information about the profile of Christ before the Nicean Council. Adversus Haereses consists of five parts. In the first part of the work, he explains his thoughts on gnosticism, in the second part, he criticizes and refutes the gnostic arguments, and explains the Christian doctrine in the other three parts. The first sentence of his book begins with "There is only one God: it cannot be otherwise." In this article, I will analyze the monotheistic words of Irenaeus in Adversus Haereses.