f) Establish the fact that man needs only to believe in the Lord Jesus Christ as his personal Saviour for salvation.

John 1:12
Acts 16:31
John 3:16-18
John 6:47

John 1:12

But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:

Acts 16:31

And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house.

John 3:16-18

16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
18 He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.

John 6:47

Verily, verily, I say unto you, He that believeth on me hath everlasting life.