John 6:70-71

Then Jesus replied, "Have I not chosen you, the Twelve? Yet one of you is a devil!" (He meant Judas, the son of Simon Iscariot, who, though one of the Twelve, was later to betray him.)

Have I not chosen you, the Twelve? 
John 15:16  "You did not choose me, but I chose you and appointed you so that you might go and bear fruit--fruit that will last--and so that whatever you ask in my name the Father will give you." 
John 15:19  "If you belonged to this world, it would love you as its own. As it is, you do not belong to the world, but I have chosen you out of the world. That is why the world hates you."

Yet one of you is a devil! 
John 13:27  As soon as Judas took the bread, Satan entered into him. So Jesus told him, "What you are about to do, do quickly."
John 17:12  "While I was with them, I protected them and kept them safe by that name you gave me. None has been lost except the one doomed to destruction so that Scripture would be fulfilled."
John 13:18-19  " I am not referring to all of you; I know those I have chosen. But this is to fulfill this passage of Scripture: 'He who shared my bread has turned against me.' [Psalm 49:1] I am telling you now before it happens, so that when it does happen you will believe that I am who I am."
Psalm 49:1  Even my close friend, someone I trusted, one who shared my bread, has turned against me.

(He meant Judas, the son of Simon Iscariot, who, though one of the Twelve, was later to betray him.)  
Matthew 26:14-15  Then one of the Twelve--the one called Judas Iscariot--went to the chief priests and asked, "What are you willing to give me if I deliver him over to you?" So they counted out for him thirty pieces of silver.
Mark 14:10  Then Judas Iscariot, one of the Twelve, went to the chief priests to betray Jesus to them.
Luke 22:4  And Judas went to the chief priests and the officers of the temple guard and discussed with them how he might betray Jesus.

[brackets are mine]

Scriptures taken from the Holy Bible, New International Version® NIV®, 
Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
Limited to 15 verses per post.