So then faith comes by hearing, and hearing by the Word of God. Romans 10:17

Then Jesus said to those Jews who believed Him, “If you abide in My Word, you are My disciples indeed. And you shall know the truth, and the truth shall make you free.” John 8:31–32

I know that you are Abraham’s descendants, but you seek to kill Me, because My Word has no place in you. I speak what I have seen with My Father, and you do what you have seen with your father. John 8:37–38

You are of your father the devil, and the desires of your father you want to do. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he speaks a lie, he speaks from his own resources, for he is a liar and the father of it. John 8:44