Did Moshe and King David really not know when it was midnight? It seems that they did know. If so, why did Moshe say "around midnight" and what was the need to David's harp? How was David different from other kings? How did he respond when Mefiboshet corrected him? In what way was his son Kilav special? Why are there dots on the word "lulai" in the verse in Psalms? How can sinning affect something that is supposed to happen? Why did the Rabbis say one can say shema until midnight? One who doesn't keep to the words of the rabbis on this issue are deserving of death. Why so severe? Does one need to mention redemption right before shmone esrei in maariv - meaning does one say shema before or after shmone esrei? What is the basis for each opinion? If one says ashrei 3 times a day, one is guaranteed entry in the World to Come. Why? Why is the letter samech missing from ashrei?