Now we know what God does during the day, but how does He occupy Himself in the night-time? We may say He does the same as at day-time; or that during the night He rides on a swift cherub over eighteen thousand worlds; as it is said (Ps. lxviii. 17), "The chariots of God are twenty thousand," less two thousand Shinan; read not Shinan but She-einan, i. e., two thousand less than twenty thousand, therefore eighteen thousand.
Avodah Zarah, fol. 3. col. 2.
Prince Contrukos asked Rabbon Yochanan ben Zacchai how, when the detailed enumeration of the Levites amounted to twenty-two thousand three hundred (the Gershonites, 7500; the Kohathites, 8600; the Merarites, 6200, making in all 22,300), the sum total given is only twenty-two
thousand, omitting the three hundred. "Was Moses, your Rabbi," he asked, "a cheat or a bad calculator?" He answered, "They were first-borns, and therefore could not be substitutes for the first-born of Israel."
Bechoroth, fol. 5, col. 1.