Here are some of my favorites. Hope it helps. Cults are hard to reach!

Isaiah 43:10 Ye are my witnesses, saith the LORD, and my servant whom I have chosen: that ye may know and believe me, and understand that I am he: before me there was no God formed, neither shall there be after me.
43:11 I, even I, am the LORD; and beside me there is no savior.
43:12 I have declared, and have saved, and I have showed, when there was no strange god among you: therefore ye are my witnesses, saith the LORD, that I am God.

Titus 3:4 But after that the kindness and love of God our Savior toward man appeared,
3:5 Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;
3:6 Which he shed on us abundantly through Jesus Christ our Savior;
3:7 That being justified by his grace, we should be made heirs according to the hope of eternal life.