Best advice to get rid of them, say you're one of the anointed and that you have been given Eternal life as a gift for believing in Jesus christ, then if you have to, have him turn to 1 John 5, its a short chapter and it says that you have been given this as a promise and if they say otherwise then they are calling god a liar., its says so in the chapter
1 John 5 New International Version (NIV)
Faith in the Incarnate Son of God
5 Everyone who believes that Jesus is the Christ is born of God, and everyone who loves the father loves his child as well. 2 This is how we know that we love the children of God: by loving God and carrying out his commands. 3 In fact, this is love for God: to keep his commands. And his commands are not burdensome, 4 for everyone born of God overcomes the world. This is the victory that has overcome the world, even our faith. 5 Who is it that overcomes the world? Only the one who believes that Jesus is the Son of God.
6 This is the one who came by water and blood—Jesus Christ. He did not come by water only, but by water and blood. And it is the Spirit who testifies, because the Spirit is the truth. 7 For there are three that testify: 8 the [ a ] Spirit, the water and the blood; and the three are in agreement. 9 We accept human testimony, but God’s testimony is greater because it is the testimony of God, which he has given about his Son. 10 Whoever believes in the Son of God accepts this testimony. Whoever does not believe God has made him out to be a liar, because they have not believed the testimony God has given about his Son. 11 And this is the testimony: God has given us eternal life, and this life is in his Son. 12 Whoever has the Son has life; whoever does not have the Son of God does not have life.
13I write these things to you who believe in the name of the Son of God so that you may know that you have eternal life. 14 This is the confidence we have in approaching God: that if we ask anything according to his will, he hears us. 15 And if we know that he hears us—whatever we ask—we know that we have what we asked of him.
16 If you see any brother or sister commit a sin that does not lead to death, you should pray and God will give them life.
Then tell the elder you will pray for him so that he to, will have life through Jesus Christ!!!!