For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to everyone that believeth; to the Jews first, and also to the Greek.
Romans 1:16

How then shall they call on him in whom they have not believed? and how shall they believe in him of whom they have not heard? and how shall they hear without a preacher?
Romans 10:14

Search the scriptures; for in them ye think ye have eternal life: and they which testify of me.
And ye will not come to me, that ye might have life. John 5:39-40