Studying and Teaching

I am a gentile Bible scholar. Scripture says that Jonah was in the belly of the great fish for "three days and three nights." My Christian pastor quoting Moody Bible Commentary told us that "Jewish people regarded even a part of a day as a day and a night." In theory, that would mean that Jonah could have been in the fish no more than 25 hours ... still a miracle but certainly of a different flavor. My question is, when Scripture says "3 days and 3 nights", does it mean "not less than" that amount of time?

In I Kings, Chapter 3:10, the following sentence says: וַיִּיטַ֥ב הַדָּבָ֖ר בְּעֵינֵ֣י אֲדֹנָ֑י כִּ֚י שָׁאַ֣ל שְׁלֹמֹ֔ה אֶת־הַדָּבָ֖ר הַזֶּֽה׃ My Chevruta and I wondered why G-d's name is Ad-nai and not YH-VH, as in most, if not all cases of B'einei Hashem. When I first translated it, I thought Shlomo was speaking "to my Lord," and then spoke of himself in the 3rd person in the 2nd part of the sentence, as if to say, "May the thing be good in the eyes, of my Lord, because Shlomo [me] asked for this thing." Similar to a child asking a parent, "Will you see my request as good, because Joey [your son] asked for this thing."  

I know you are busy. Can you please confirm the scripture above describes 2 cherubim: Estimated Height according to cubits = approximately 16 1/2 feet according to cubits specified? Estimated width of both cherubs wings tip to wing tip = approximately 33 feet They were located in the inner room = Holy of Holies SCRIPTURE @ 1 Kings 6:23-27 indicates to me this is true but this is the first time I have seen this.

Iyov 26:5 says, "Dead [things] are formed from under the waters, and the inhabitants thereof." Resh~Pei~Aleph~Yud~Mem spells "raphayim" and means "dead [things]." Resh~Pei~Aleph spells "rapha" and means "lax, a ghost, shades, spirits,dead, deceased." Would you explain this verse?

What does it mean when Moshe placed blood on the ridge of the ear, on the right thumb, and the right big toe?