Yes, I have, Theland. He who does not believe on the Son shall not see life. Jesus Himself stated- Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
Some people believe that anyone believing in God, (Jesus, Allah, Buddha etc) will be saved. This is completely against what the Bible teaches, which is that Christ is the only way: "Salvation Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved."
I agree with Hazi- any other doctrine is false and misleading.