Should one tolerate other views when promoting one's faith?

Yes, without question. Whoever does not respect other views wins no hearts, and according to the Holy Qur’an there is no compulsion in faith.

Anyone who believes hopes that others will come to share that belief. That is natural. But conviction is born in the heart and the mind, and the only way there is one that respects the other person. Whoever cannot bear other views drives people away instead of winning them. To spread a faith means to win hearts, not to subdue people.

That is why the idea that Islam should be spread by the sword has no basis. The human conscience rises against it. Above all, there is not a single verse in the Holy Qur’an that teaches such a thing. On the contrary, the first verse above makes clear that there is no compulsion in faith.

The second verse comes from a short chapter addressed to the idol worshippers of Arabia, people of an entirely different belief. It ends with a simple sentence of freedom. Everyone may live by their own faith. Who is right is for God to decide. No human being has the right to force their faith into another person's heart.

Tolerance does not mean having to stay silent. One may invite, explain and give reasons, with wisdom, kind words and the best arguments, as the third verse says. Respect for others and sincere invitation belong together. Whoever demands force or pressure in the name of faith is not following the Holy Qur’an but has invented something new.