Scripture can be unclear and challenging, but even in that there is goodness, for we learn much when we think about and discuss what God might have meant in His Word.
Case in point: when God separated light and darkness, that probably meant separating good angels from fallen angels. The repeated refrain "and God saw that it was good" is not intended to be surprise on the part of God at the nature of creation or on the quality of His works in separating angels, but rather of declaration and affirmation that what He had planned all along came out well.
Even Plato knew this, for he knew that God is omniscient, and knows everything past, present, and future and does not change in that knowledge because He made everything "by means of the Word."
God, however, does more than that--not only does He Himself know these things, He deigns to pass at least some of that information on to us. Specifically, He lets us know who created (God); how He created (by His command 'let it be!'); and why He created ('because it is good').
"There is no Creator higher than God, no art more efficacious than the Word of God, no better reason why something good should be created than that the God who creates is good."