The Athanasian Creed (which helped set the Trinity as “orthodox doctrine”) says that God is incomprehensible. The Bible says God wants us to know Him and His son, Jesus Christ.
Jesus prayed this prayer to God in the gospel of John:
Now this is eternal life: that they may know you, the only true God, and Jesus Christ, whom you have sent.
First of all, we have the only true God and Jesus Christ in the same verse. How can the Father be the “only true God” if Jesus Christ is also “God”?
Jesus was praying that we would know his heavenly Father and have an amazing relationship with Him. God longs to have an intimate relationship with us.
Jesus Christ also said in the Gospel of John:
If you had known me, you would have known my Father also; from now on you know Him, and have seen Him.
Jesus Christ is the image of God. He perfectly represented the Father in every act he committed here on Earth. Jesus said if you know him, you know the Father.
Why would Jesus Christ say that if we could never fully know who God is?
In the Old Testament, God calls those who do not know Him “fools.”
My people are fools; they do not know me.
Why would God call his people fools for not knowing Him, if knowing Him was not possible? We can know who God is and have a relationship with Him (John 17:3). The goal isn’t to know everything God knows (which is impossible), but to know “who” He is and have a relationship with Him.
Jesus Christ came to make God known among His people:
John 1:18 (RSV)
No one has ever seen God; the only Son, who is in the bosom of the Father, he has made him known.
According to the Athanasian Creed, God is incomprehensible. To comprehend means “to understand or to know.” The Bible repeatedly says that we can know God and Jesus Christ, yet the backbone of the Trinity says we cannot.
Isaiah 55:8 is commonly used to say that God is incomprehensible and far beyond our grasp:
“For My thoughts are not your thoughts, Neither are your ways My ways,” declares the LORD.
If you look at the context of this verse, you will see that this verse is referring to the wicked and unrighteous men of the time who neither thought like God nor knew His ways.
We can know God and His son, Jesus Christ! Jesus Christ said it best in John 17:3, “Now this is eternal life: that they may know you, the only true God, and Jesus Christ, whom you have sent.”