Doing this in prayer: Berachot 19a
References to Death as an Inevitability: Ketuvot 8b
Acknowledging that we deserve punishment: Berachot 19a Isaiah reports a comparison between the Jews' behavior to that of Sodom: Berachot 19a
Rav Chisda said that Rav Sheshet's student's eulogy would be considered a Public interest, and Rav Sheshet said that Rav Chisda's student's would be; both wished to avoid opening a place for the Satan against their own schools: Megillah 28b
"Like an Error Which Escapes the Ruler's Mouth [And is a Fait Accompli] - KiShegagah HaYotzay Lifnei HaShalit"
The lips have a covenant, that their speech will come true: Moed Katan 18a Avraham told Eliezer that both he and Isaac would return from the mountain [where he went to slaughter Isaac] and so it occurred: Moed Katan 18a Shemuel's Father asking Shemuel how he would act if his own daughters were kidnapped: Ketuvot 23a
Shemuel asked his mourning brother, Pinchas, why he hadn't cut his fingernails; Pinchas responded, "Would you be so callous with your own mourning?" and in the end Shemuel suffered a loss, too, illustrating the power of careless speech: Moed Katan 18a Mar bar Ameimar reported his father Ameimar's piety [in a business deal] to Rav Ashi. Rav Ashi asked, "But what if he would have died and the deal had been left to you?" And Ameimar died: Bava Metzia 68a