38 The field is the world, and the good seed is the sons of the kingdom. The weeds are the sons of the evil one, 39 and the enemy who sowed them is the devil. The harvest is the end of the age, and the reapers are angels. 40 Just as the weeds are gathered and burned with fire, so will it be at the end of the age. 41 The Son of Man will send his angels, and they will gather out of his kingdom all causes of sin and all law-breakers, 42 and throw them into the fiery furnace. In that place there will be weeping and gnashing of teeth. 43 Then the righteous will shine like the sun in the kingdom of their Father. He who has ears, let him hear.
Matthew 13:38-43 (ESV)

4 He put another parable before them, saying, “The kingdom of heaven may be compared to a man who sowed good seed in his field, 25 but while his men were sleeping, his enemy came and sowed weeds among the wheat and went away. 26 So when the plants came up and bore grain, then the weeds appeared also. 27 And the servants of the master of the house came and said to him, ‘Master, did you not sow good seed in your field? How then does it have weeds?’ 28 He said to them, ‘An enemy has done this.’ So the servants said to him, ‘Then do you want us to go and gather them?’ 29 But he said, ‘No, lest in gathering the weeds you root up the wheat along with them. 30 Let both grow together until the harvest, and at harvest time I will tell the reapers, “Gather the weeds first and bind them in bundles to be burned, but gather the wheat into my barn.”‘”
Matthew 13:24-30 (ESV)

20 As for what was sown on rocky ground, this is the one who hears the word and immediately receives it with joy, 21 yet he has no root in himself, but endures for a while, and when tribulation or persecution arises on account of the word, immediately he falls away.
Matthew 13:20-21 (ESV)

31 Therefore I tell you, every sin and blasphemy will be forgiven people, but the blasphemy against the Spirit will not be forgiven. 32 And whoever speaks a word against the Son of Man will be forgiven, but whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come. 33“Either make the tree good and its fruit good, or make the tree bad and its fruit bad, for the tree is known by its fruit. 34 You brood of vipers! How can you speak good, when you are evil? For out of the abundance of the heart the mouth speaks. 35 The good person out of his good treasure brings forth good, and the evil person out of his evil treasure brings forth evil. 36 I tell you, on the day of judgment people will give account for every careless word they speak, 37 for by your words you will be justified, and by your words you will be condemned.”
Matthew 12:31-37 (ESV)

42 And whoever gives one of these little ones even a cup of cold water because he is a disciple, truly, I say to you, he will by no means lose his reward.”
Matthew 10:42 (ESV)

32 So everyone who acknowledges me before men, I also will acknowledge before my Father who is in heaven, 33 but whoever denies me before men, I also will deny before my Father who is in heaven.
Matthew 10:32-33 (ESV)

24″A disciple is not above his teacher, nor a servant above his master. 25 It is enough for the disciple to be like his teacher, and the servant like his master. If they have called the master of the house Beelzebul, how much more will they malign those of his household. 26“So have no fear of them, for nothing is covered that will not be revealed, or hidden that will not be known. 27 What I tell you in the dark, say in the light, and what you hear whispered, proclaim on the housetops. 28 And do not fear those who kill the body but cannot kill the soul. Rather fear him who can destroy both soul and body in hell.
Matthew 10:24-28 (ESV)

21 Brother will deliver brother over to death, and the father his child, and children will rise against parents and have them put to death, 22 and you will be hated by all for my name’s sake. But the one who endures to the end will be saved.
Matthew 10:21-22 (ESV)

13“Enter by the narrow gate. For the gate is wide and the way is easy that leads to destruction, and those who enter by it are many. 14 For the gate is narrow and the way is hard that leads to life, and those who find it are few. 15“Beware of false prophets, who come to you in sheep’s clothing but inwardly are ravenous wolves. 16 You will recognize them by their fruits. Are grapes gathered from thorn-bushes, or figs from thistles? 17 So, every healthy tree bears good fruit, but the diseased tree bears bad fruit. 18 A healthy tree cannot bear bad fruit, nor can a diseased tree bear good fruit. 19 Every tree that does not bear good fruit is cut down and thrown into the fire. 20 Thus you will recognize them by their fruits. 21“Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but the one who does the will of my Father who is in heaven. 22 On that day many will say to me, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’ 23 And then will I declare to them, ‘I never knew you; depart from me, you workers of lawlessness.’
Matthew 7:13-23 (ESV)

29 If your right eye causes you to sin, tear it out and throw it away. For it is better that you lose one of your members than that your whole body be thrown into hell. 30 And if your right hand causes you to sin, cut it off and throw it away. For it is better that you lose one of your members than that your whole body go into hell.
Matthew 5:29-30 (ESV)