For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse. Rom 1:20.

God’s creation reveals God through that which He created. Some years ago whilst being driven by a friend through an area of South Wales, he recalled his grandmother saying “how could anyone not believe there is a God when they see all this?” The “invisible things” of God are “clearly seen” by the things “that are made”, not vaguely seen (although cites together with their pollution may well obscure them to some degree).. Even His “eternal power and Godhead”. 

Who is the image of the invisible God, the firstborn of every creature: For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him. And he is before all things, and by him all things consist. Col 1:15-17

Now unto the King eternal, immortal, invisible, the only wise God, be honour and glory for ever and ever. Amen. 1Ti 1:17  

By faith he forsook Egypt, not fearing the wrath of the king: for he endured, as seeing him who is invisible. Heb 11:27