Stoping Other Preachers?

Its a sin to try and stop someone who is preaching wrongly. Only people in their ignorance think they can stop someone they don't agree with. But it is a sin to even try.

Matt 13:24-34
24 Another parable He put forth to them, saying: "The kingdom of heaven is like a man who sowed good seed in his field;
25 "but while men slept, his enemy came and sowed tares among the wheat and went his way.
26 "But when the grain had sprouted and produced a crop, then the tares also appeared.
27 "So the servants of the owner came and said to him, 'Sir, did you not sow good seed in your field? How then does it have tares?'
28 "He said to them, 'An enemy has done this.' The servants said to him, 'Do you want us then to go and gather them up?'
29 "But he said, 'No, lest while you gather up the tares you also uproot the wheat with them.
30 'Let both grow together until the harvest, and at the time of harvest I will say to the reapers, "First gather together the tares and bind them in bundles to burn them, but gather the wheat into my barn."'"
31 Another parable He put forth to them, saying: "The kingdom of heaven is like a mustard seed, which a man took and sowed in his field,
32 "which indeed is the least of all the seeds; but when it is grown it is greater than the herbs and becomes a tree, so that the birds of the air come and nest in its branches."
33 Another parable He spoke to them: "The kingdom of heaven is like leaven, which a woman took and hid in three measures of meal till it was all leavened."
34 All these things Jesus spoke to the multitude in parables; and without a parable He did not speak to them,
(NKJ)

Most people that try to stop someone else is just ate up with bitter envy. That was why they crucified Christ was because of envy.

Phil 1:15-18
15 Some indeed preach Christ even from envy and strife, and some also from good will:
16 The former preach Christ from selfish ambition, not sincerely, supposing to add affliction to my chains;
17 but the latter out of love, knowing that I am appointed for the defense of the gospel.
18 What then? Only that in every way, whether in pretense or in truth, Christ is preached; and in this I rejoice, yes, and will rejoice.
(NKJ)

Anyone who tries to run someone else off because they don't like their message has a demon in them. The name calling and heckling is all from the devil.

Luke 9:54-55
54 And when His disciples James and John saw this, they said, "Lord, do You want us to command fire to come down from heaven and consume them, just as Elijah did?"
55 But He turned and rebuked them, and said, "You do not know what manner of spirit you are of.
(NKJ)

Gal 5:15-17
15 But if you bite and devour one another, beware lest you be consumed by one another!
16 I say then: Walk in the Spirit, and you shall not fulfill the lust of the flesh.
17 For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary to one another, so that you do not do the things that you wish.
(NKJ)

James 4:11
11 Do not speak evil of one another, brethren. He who speaks evil of a brother and judges his brother, speaks evil of the law and judges the law. But if you judge the law, you are not a doer of the law but a judge.
(NKJ)