Since there are different perceptions, any deity tends to be perceived differently. Different people therefore arrive at different interpretations of any universal "Truth." Many of these interpretations are mutally exclusive. Since we are only using our interpretation of "Truth," no one can lay claim to any one interpretation being the real one.
So how can anyone know anything about God? We can know God through His effects.
Your links states various things it purports to know about God, such as goodness, perfection, infinity, omnipresence, immutability and eternity.
Even the same incarnations of "His effects" can be interpreted differently. We can't even get multiple people to agree on what happened at a vehicle accident site.
For all we know, the Hare Krishnas have it right. Or the Wiccans.
Is this really true, or merely your perception?
Someone's been feeding you a line, and it ain't coming from up above.
I highly recommend Peter Kreeft's "Handbook of Christian Apologetics."