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.
Mark 4:24-33
24 Then He said to them, "Take heed what you hear. With the same measure you use, it will be measured to you; and to you who hear, more will be given.
25 "For whoever has, to him more will be given; but whoever does not have, even what he has will be taken away from him."
26 And He said, "The kingdom of God is as if a man should scatter seed on the ground,
27 "and should sleep by night and rise by day, and the seed should sprout and grow, he himself does not know how.
28 "For the earth yields crops by itself: first the blade, then the head, after that the full grain in the head.
29 "But when the grain ripens, immediately he puts in the sickle, because the harvest has come."
30 Then He said, "To what shall we liken the kingdom of God? Or with what parable shall we picture it?
31 "It is like a mustard seed which, when it is sown on the ground, is smaller than all the seeds on earth;
32 "but when it is sown, it grows up and becomes greater than all herbs, and shoots out large branches, so that the birds of the air may nest under its shade."
33 And with many such parables He spoke the word to them as they were able to hear it.
(NKJ)
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)
Mark 4:24-33
24 Then He said to them, "Take heed what you hear. With the same measure you use, it will be measured to you; and to you who hear, more will be given.
25 "For whoever has, to him more will be given; but whoever does not have, even what he has will be taken away from him."
26 And He said, "The kingdom of God is as if a man should scatter seed on the ground,
27 "and should sleep by night and rise by day, and the seed should sprout and grow, he himself does not know how.
28 "For the earth yields crops by itself: first the blade, then the head, after that the full grain in the head.
29 "But when the grain ripens, immediately he puts in the sickle, because the harvest has come."
30 Then He said, "To what shall we liken the kingdom of God? Or with what parable shall we picture it?
31 "It is like a mustard seed which, when it is sown on the ground, is smaller than all the seeds on earth;
32 "but when it is sown, it grows up and becomes greater than all herbs, and shoots out large branches, so that the birds of the air may nest under its shade."
33 And with many such parables He spoke the word to them as they were able to hear it.
(NKJ)
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)
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