Midrash su Salmi 101:7

Our Rabbis were taught: Four men entered the [heavenly] garden and they were: Ben Azai, Ben Zonia, Acher and R. Akiba. — While going R. Akiba warned his associates saying: "When you arrive at the stone of pure marble be careful not to say "water, water,' because it is written (Ps. 101, 7) He that speaketh falsehood shall not be established before Mine eyes." Our Rabbis were taught: Four men entered the [heavenly] garden and they were: Ben Azzai, Ben Zoma, Acher and R. Akiba. Ben Azzai gazed [at the Shechina) and died; concerning him the following passage may be applied (Ps. 116, 15) Grievous in the eyes of the Lord is the death of His pious one. Ben Zoma gazed and went mad; to him the following passage may be applied (Prov. 25, 16) Hast thou found honey? Eat so much as is sufficient for thee, lest thou consume too much of it, and have to vomit it forth. Acher cut the plants (i.e., made bad use of his learning). R. Akiba entered in peace, and departed in peace.

R. Chisda said in the name of Jeremiah b. Abba: "There are four classes that will not deserve to receive the Divine presence: the class of scorners, the class of liars, the class of hypocrites and the class of talebearers. The class of scorners, as it is written (Hos. 7, 5) The king joineth his hand with scorners; the class of liars, as it is written (Ps. 101, 7) He that speaketh false-hood shall not succeed before My eyes: the class of hypocrites, as it is written (Job. 13, 16) For a hypocrite cannot come before Him: the class of tale-bearers, as it is written (Ps. 5, 5) For thou art not a God that hath pleasure in wickedness; evil cannot abide with Thee.

R. Nachman said: "Achab's sins and good deeds were just equal, as it is said (Ib. 22, 20) Who will persuade Achab, hence it is difficult to punish him, as his sins did not outweigh his good deeds." R. Joseph contradicted this and said that he, concerning whom it reads (Ib. 21, 25) But indeed there was none like unto Achab, etc., and we are taught that he used to give a daily allowance of golden dollars for the idols. How can you say that his sins and good deeds were equal? The reason, however, that it was necessary to persuade him, is because he was liberal with his money and assisted many scholars from his estate, and therefore half of his sins were atoned. (Ib. 22, 21) And there came forth the spirit, and stood before the Lord, and said: I will entice him. And the Lord said unto him: Wherewith? And he said: I will go forth and will be a lying spirit in the mouth of all his prophets. And He said: Thou shalt entice him, and shalt prevail also; go forth, and do so. Whose spirit was it? Said R. Jochannan: "The spirit of Naboth the Israelite." And what is meant by Go forth? Said R. Juda: "Go forth from My compartment; for it is written (Ps. 191, 7) He that speaketh falsehood shall not be establsihed before mine eyes." Said R. Papa: "This is meant what the people say: 'He that wreaks his vengeance destroys his own house'."