How can I know that the God of the Bible is real?

"In the beginning God created the heaven and the earth."

(Genesis 1:1).

 

"So God created man in his own image, in the image of God created he him; male and female created he them."

(Genesis 1:27)

 

"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: Because that, when they knew God, they glorified him not as God, neither were thankful ; but became vain in their imaginations, and their foolish heart was darkened . Professing themselves to be wise, they became fools , And changed the glory of the uncorruptible God into an image made like to corruptible man, and to birds, and fourfooted beasts, and creeping things. Wherefore God also gave them up to uncleanness through the lusts of their own hearts, to dishonour their own bodies between themselves: Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator , who is blessed for ever. Amen."

(Romans 1:20-25)