Kabbalah sa Jeremias 17:5: Sha'arei Kedusha

The flatterer is amongst the four classes of people who shall not greet the countenance of the Indwelling Presence of HaShem-יהו״ה, blessed is He (the Shechinah).⁶⁰³Talmud Bavli, Sotah 42a This is because he denigrates the honor of the Ever Present One, HaShem-יהו״ה, blessed is He, when he cajoles and flatters the wicked. This is as written,⁶⁰⁴Proverbs 24:24 “One who tells a wicked person, ‘You are righteous,’ – the peoples shall curse him, the nations shall despise him.” Even if he flatters and cajoles a person who is not wicked, it nevertheless is as if he fears man and places his trust in man, as it is written,⁶⁰⁵Jeremiah 17:5 “Accursed is the man who puts his trust in people.” Regarding such a person the verse states,⁶⁰⁶Job 13:16; See Talmud Bavli, Sotah 42a ibid. “The flatterer shall not come before Him.”