Kabbalah Amsal 1:10: Sha'arei Orah

Behold, our rabbis of blessed memory said,⁶Talmud Bavli, Sanhedrin 90a “Whosoever pronounces the name of HaShem-יהו"ה according to its spelling has no share in the coming world.” If even the supremely holy one, Rabbi Chaninah ben Teradyon, who never pronounced the name HaShem-יהו"ה in any unholy manner or ever made use of it, except in an honorable way, to learn and understand the ways of HaShem-יהו"ה, blessed is He, was nonetheless punished;⁷Talmud Bavli, Avodah Zarah 17b-18a how much more so we, who are impoverished and lacking!

And now my son, listen to my voice, let your ears be attentive to my counsel. My son, if sinners seduce you, do not be enticed.¹¹Proverbs 1:10 If they tell you, “Come with us and we will give into your hands names and pronunciations that you can use,” my son, do not walk on the way with them. Restrain your legs from their path.¹²Proverbs 1:15 For all those names and usages are kinds of nets and traps with which to hunt souls and lead them to destruction.