For thousands of  years philosophers, theologians, and scientists have tried to answer the question "Does God Exist?" This is God's answer:

And God said..."I AM"

                                                                                          (Exodus 3: 14)

Thus saith the LORD, thy redeemer, and he that formed thee from the womb, I am the LORD that maketh all things; that stretcheth forth the heavens alone; that spreadeth abroad the earth by myself; (Isaiah 44: 24)

 I am the LORD, and there is none else, there is no God beside me: I girded thee, though thou hast not known me: That they may know from the rising of the sun, and from the west, that there is none beside me. I am the LORD, and there is none else. ( Isaiah 45: 5-6)

 
Hearken unto me, O Jacob and Israel, my called; I am he; I am the first, I also am the last.
Mine hand also hath laid the foundation of the earth, and my right hand hath spanned the heavens: when I call unto them, they stand up together. (Isaiah 48: 12-13}

Thus saith the LORD, The heaven is my throne, and the earth is my footstool: where is the house that ye build unto me? and where is the place of my rest? For all those things hath mine hand made, and all those things have been, saith the LORD: ( Isaiah 66: 1-2)

 Fear ye not me? saith the LORD: will ye not tremble at my presence, which have placed the sand for the bound of the sea by a perpetual decree, that it cannot pass it: and though the waves thereof toss themselves, yet can they not prevail; though they roar, yet can they not pass over it? (Jeremiah 5: 22)

 
I have made the earth, the man and the beast that are upon the ground, by my great power and by my outstretched arm, and have given it unto whom it seemed meet unto me. (Jeremiah 27: 5}

 I am Alpha and Omega, the beginning and the ending, saith the Lord, which is, and which was, and which is to come, the Almighty. (Revelation 1: 8)
 

And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be. (Revelation 22: 12)