It's a common saying that people can't accept the truth when it's dictated to them, and that the only thing that makes the truth palatable is the thrill of self-discovery. So don't look to prophets, preachers, miracles or rituals for proof. Don't spend so much effort looking for scientific or physical proof, but rather look to your own human experience, and deep within your own soul. Somewhere inside you, deep within, you eventually will come to know with all certainty the truth behind the teachings in the Bible. The truth of the word of God is self evident.
Love is the only way.
Eventually you will know this to be true, because the brief time you have spent on earth has revealed to you the sheer destructiveness of greed, anger and hatred. Somewhere along the way God had to intervene. In the Bible you will find truth if you have perseverance to study it. The second step is humbly seeking help to change your life. In prayer, ask God and Jesus to help you find the strength to live the life the way they want you to.