Believe upon Christ

John 3:36

He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.

John 12:44

Jesus cried and said, He that believeth on me, believeth not on me, but on him that sent me.

1John 5:10

He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.