Tolerance is regarded as a kind of virtue in our society and be treated intolerant become almost an insult. Regarding faith, the Bible is not tolerant at all from the start. It is even true Christians, because they know that God's word is truth and decisive. When a person does not have the truth, then it loses nothing by making a compromise. She did anyway nothing to lose from the start. But for a believer, compromising the Word of God would be fatal.
Jesus says in that regard: "I am the way, the truth and the life. No one comes to the Father except through me (John 14: 6). That is why I told you that you will die in your sins: for if ye believe not that I am, you will die in your sins (John 8: 24). Whoever believes and is baptized will be saved, but whoever does not believe will be condemned (Mark 16: 16). "That's what it comes across the word of God. "Go, make disciples of all nations ..." (Matt. 28: 19). All these nations needs of the Gospel in spite of their religion, because religion is made by man and is full of compromises, but the truth comes from God alone. There are of salvation in Jesus Christ!