God has shown himself through the whole world

Rom 1:18  For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who by their unrighteousness suppress the truth.
Rom 1:19  For what can be known about God is plain to them, because God has shown it to them.
Rom 1:20  For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.
Rom 1:21  For although they knew God, they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened.
Rom 1:22  Claiming to be wise, they became fools,
Rom 1:23  and exchanged the glory of the immortal God for images resembling mortal man and birds and animals and creeping things.

these verses are very interesting to me,
because if you know the truth and do not act on it, you will have the wrath of God upon you. Yet all men have seen the evidence of God in creation. We can see the evidence of God when you look at anything that he has created.
if you put the parts of a watch in a pail, how long will you have to shake the pail before you have a working watch?
never the parts to the watch would have decayed before the watch could have been created. the same thing happens with cells, without all parts of a cell working at the same time it will not live, and some parts (such as amino acids) are destroyed if they are not protected. If you look at DNA, it is so complex that it is impossible for it to have evolved.  the interaction with the DNA, RNA, and the building of proteins is so complex that it would take several books of information just to explain it. Yet all this just evolved, life came from nothing. every scientist should be able to see the complexity of the world around us more than anybody else, yet they don't. they see the little things and say "wow, I wonder how that evolved" or "this is amazing what I discovered." yet God created it, almost all people that were around 2000 years ago, believed in some kind of god. Now, less and less people believe there is a God.
Yet they fail to explain the world, and all its natural wonders, away.
People that have heard the Gospel of Christ are without excuse, they will be punished for what they know and yet failed to act on
and so that all men are without excuse, God has shown his glory, power, magnificence through his creation.