How do we know God is the only true God?

The declaration of God as the only true God is central to the Christian faith, emphasized in John 17:3. Jesus articulates that to know the Father and Himself is the essence of eternal life. This exclusivity of God is not just a characteristic but a profound truth about His sovereignty and glory. The fact that Jesus identifies Himself with the Father further reinforces the belief that all life and salvation are found in knowing this singular divine reality. Moreover, through the glorification of the Son as an extension of the Father's glory, we see God’s nature as foundational to the salvation given to the elect.