The Knowledge of God

What is the practical value of this knowledge?

It is life:

John 17:3  

Now this is eternal life: that they may know you, the only true God, and Jesus Christ, whom you have sent.

It transforms:

2 Peter 2:20

If they have escaped the corruption of the world by knowing our Lord and Savior Jesus Christ and are again entangled in it and overcome, they are worse off at the end than they were at the beginning.

Jeremiah 22:16  

He defended the cause of the poor and needy, and so all went well. Is that not what it means to know me?” declares the LORD.

Isaiah 33:14-16  

24 The sinners in Zion are terrified; trembling grips the godless: “Who of us can dwell with the consuming fire? Who of us can dwell with everlasting burning?”

15 He who walks righteously and speaks what is right, who rejects gain from extortion and keeps his hand from accepting bribes, who stops his ears against plots of murder and shuts his eyes against contemplating evil—

16 this is the man who will dwell on the heights, whose refuge will be the mountain fortress. His bread will be supplied, and water will not fail him.