6 But without faith it is impossible to please Him, for he who comes to God must believe that He is, and that He is a rewarder of those who diligently seek Him. 7 By faith Noah, being divinely warned of things not yet seen, moved with godly fear, prepared an ark for the saving of his household, by which he condemned the world and became heir of the righteousness which is according to faith.
” (Hebrews 11:6–7, NKJV)
It is good and important to learn WHO GOD IS, but we often fail to comprehend THAT GOD IS.
It might be half the story.
When we change the nature of God away from the biblical revelation we inevitable deny THAT HE IS because we are promoting another God (our own imagination).
BUT
Even if we promote the correct biblical picture we still often fail to believe THAT GOD IS.
He really does exist and is present in the room now and watching intently what we do.