ONE MEDIATOR : "and one mediator between God and men, the man Christ Jesus" (1 Timothy 2v5)
ONE SACRIFICE : "But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God" (Hebrews 10v12)
ONE WAY TO HEAVEN : "Jesus saith unto him, "I am the way, the truth and the life: no man cometh unto the Father, but by me" (John 14v6)