The existence of the whole creation proves that there is a God. The universe is such a vast manifestation of the creative ability of God. Why would we doubt the existence of God? How did all these creations come into existence? If there were no God, how would we have all these great works of creation?
The deception of the devil has been the reason why we have been doubting the existence of God. The devil has blinded the eyes of the people to ignore the existence of God. This makes many of us to turn away from the Lord and follow falsehood. If we consider and allow God to influence our hearts through the Holy Spirit, we will realize that God exists.
Romans 1:19-20 (KJV) Because that which may be known of God is manifest in them; for God hath shewed it unto them.
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:
The beauty of the creation reveals the existence of a Creator. The sun and the moon; the stars and all the solar system reveals that there is a Creator. The great rivers and vast body of water with other creations, all these reveals that there is a God who created all.
Let everyone of us recognize the existence of God. Let us worship and glorify Him. We should give our hearts to do the will of God. We were created by Him for His purpose.