"Beware of false prophets, who come to you in sheep's clothing but inwardly are ravenous wolves. You will know them by their fruits. Are grapes gathered from thorns, or figs from thistles? So, every sound tree bears good fruit, but the bad tree bears evil fruit. A sound tree cannot bear evil fruit, nor can a bad tree bear good fruit. Every tree that does not bear good fruit is cut down and thrown into the fire. Thus you will know them by their fruits.
"Not every one who says to me, `Lord, Lord,' shall enter the kingdom of heaven, but he who does the will of my Father who is in heaven. 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?'
And then will I declare to them, `I never knew you; depart from me, you evildoers.' (Matthew 5:15-23)
For what shall it profit a man, if he gain the whole world, and suffer the loss of his soul? (Mark 8:36)
"Woe to you, scribes and Pharisees, hypocrites! for you tithe mint and dill and cummin, and have neglected the weightier matters of the law, justice and mercy and faith; these you ought to have done, without neglecting the others. You blind guides, straining out a gnat and swallowing a camel!
"Woe to you, scribes and Pharisees, hypocrites! for you cleanse the outside of the cup and of the plate, but inside they are full of extortion and rapacity. You blind Pharisee! first cleanse the inside of the cup and of the plate, that the outside also may be clean.
"Woe to you, scribes and Pharisees, hypocrites! for you are like whitewashed tombs, which outwardly appear beautiful, but within they are full of dead men's bones and all uncleanness. So you also outwardly appear righteous to men, but within you are full of hypocrisy and iniquity.
"Woe to you, scribes and Pharisees, hypocrites! for you build the tombs of the prophets and adorn the monuments of the righteous, saying, `If we had lived in the days of our fathers, we would not have taken part with them in shedding the blood of the prophets.' Thus you witness against yourselves, that you are sons of those who murdered the prophets. Fill up, then, the measure of your fathers. You serpents, you brood of vipers, how are you to escape being sentenced to hell? Therefore I send you prophets and wise men and scribes, some of whom you will kill and crucify, and some you will scourge in your synagogues and persecute from town to town, that upon you may come all the righteous blood shed on earth, from the blood of innocent Abel to the blood of Zechari'ah the son of Barachi'ah, whom you murdered between the sanctuary and the altar. Truly, I say to you, all this will come upon this generation.
"O Jerusalem, Jerusalem, killing the prophets and stoning those who are sent to you! How often would I have gathered your children together as a hen gathers her brood under her wings, and you would not! Behold, your house is forsaken and desolate. For I tell you, you will not see me again, until you say, `Blessed is he who comes in the name of the Lord.'" (Matthew 23:23-39)