John 10:26

All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out.

He that is of God heareth God's words: ye therefore hear them not, because ye are not of God.

And when he putteth forth his own sheep, he goeth before them, and the sheep follow him: for they know his voice.

But though he had done so many miracles before them, yet they believed not on him: That the saying of Esaias the prophet might be fulfilled, which he spake, Lord, who hath believed our report? and to whom hath the arm of the Lord been revealed? Therefore they could not believe, because that Esaias said again, He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them.

What then? Israel hath not obtained that which he seeketh for; but the election hath obtained it, and the rest were blinded.

But if our gospel be hid, it is hid to them that are lost:

We are of God: he that knoweth God heareth us; he that is not of God heareth not us. Hereby know we the spirit of truth, and the spirit of error.