“The true nature of God is what’s unknowable.”
“God, after He spoke long ago to the fathers in the prophets in many portions and in many ways, in these last days has spoken to us in His Son, whom He appointed heir of all things, through whom also He made the world.
And He is the radiance of His glory and the exact represention of His nature, and upholds all things by the word of His power.” Hebrews chapter 1.
The God who speaks, and makes His nature quite knowable through the Lord Jesus Christ.
I heard the most amazing Paul Harvey clip where he talked about a man who was unsure of his belief in God at Christmas. His family went to church while he stayed home.
Then he encountered a bunch of birds that he tried to herd into his bard since the weather was below frigid cold. The birds distrusted him and he opined that if he could only speak to them in their own language he could convince them that he was only trying to save them. At that point he understood why God sent Jesus to us.
Paul Harvey told it much better than I did. But it illustrates the fact that God does indeed make himself understood through Christ.