In Revelation 22 it says:
Let the one who does wrong continue to do wrong; let the vile person
continue to be vile; let the one who does right continue to do right;
and let the holy person continue to be holy.”
Christianity is not by nature a conquering faith.
In 1 Corinthians 5:
I wrote to you in my letter not to associate with sexually immoral
people— not at all meaning the people of this world who are immoral,
or the greedy and swindlers, or idolaters. In that case you would have
to leave this world. But now I am writing to you that you must not
associate with anyone who claims to be a brother or sister but is
sexually immoral or greedy, an idolater or slanderer, a drunkard or
swindler. Do not even eat with such people.
What business is it of mine to judge those outside the church? Are you
not to judge those inside? God will judge those outside. “Expel the
wicked person from among you.”
The church is to regulate its members' conduct, not the conduct of outsiders.
Romans 12 says:
If it is possible, as far as it depends on you, live at peace with
everyone. Do not take revenge, my dear friends, but leave room for
God’s wrath, for it is written: “It is mine to avenge; I will repay,”d
says the Lord.
Persecuting others is discouraged, because we are to love our enemies.
Above all, to not respect the religions of others would be contrary to the ways of servant hood. As Matthew 23 says:
The greatest among you will be your servant. For those who exalt
themselves will be humbled, and those who humble themselves will be
I believe the example of ancient Israel in Joshua 7, when they lost a battle because Achan took plunder, is a good illustration. The Old Testament is used by some to justify Holy wars, and by others to attack Christianity. God is perfectly free to employ people to fight Holy wars, but he holds those soldiers to a high standard: you must serve God and not greed. Centuries later, the expulsion of the Jews from Spain - even those that had converted to Christianity - was not an act of piety, but one of greed. They wanted to confiscate the wealth of those they despised.