Is there a God?

To examine this question, let's read Alma 22 in the Book of Mormon, which gives an account of some missionaries who teach the gospel to a king of the Lamanites in the ancient Americas.

In verse 7, Aaron asks the king, "Believest thou that there is a God?" The king seems uncertain but is willing to believe the words of Aaron. Aaron answers the question with "Behold, assuredly as thou livest, O king, there is a God."

The king seeks to understand and asks Aaron if God is the Great Spirit that had brought their forefathers to the Americas from Jerusalem. Aaron answers affirmatively and using the same phrase "Great Spirit" in order to help the king understand, he explains in verse 10, "Yea, he is that Great Spirit, and he created all things both in heaven and in earth."

Read what happens next:

17 And it came to pass that when Aaron had said these words, the king did bow down before the Lord, upon his knees; yea, even he did prostrate himself upon the earth, and cried mightily, saying:
 18 O God, Aaron hath told me that there is a God; and if there is a God, and if thou art God, wilt thou make thyself known unto me, and I will give away all my sins to know thee, and that I may be raised from the dead, and be saved at the last day. And now when the king had said these words, he was struck as if he were dead.  ...

23 Now this was done in the presence of the queen and many of the servants. And when they saw it they greatly marveled, and began to fear. And the king stood forth, and began to minister unto them. And he did minister unto them, insomuch that his whole household were converted unto the Lord. 

Also, there was a prophet, who was a king among the Nephites, named King Benjamin that also taught to believe in God. King Benjamin declared:

9 Believe in God; believe that he is, and that he created all things, both in heaven and in earth; believe that he has all wisdom, and all power, both in heaven and in earth; believe that man doth not comprehend all the things which the Lord can comprehend. Mosiah 4:9

The Book of Mormon clearly teaches that there is a God. Reading the Book of Mormon will not only help you to know that there is a God and that he loves you, but it will also help you build a relationship with God. After all, he is your Heavenly Father and yearns to be a part of your life. Get a free copy of the Book of Mormon here: http://mormon.org/free-book-of-mormon/.