to the first question there was no quoting from the bible. I hoped you can explain without.
anyway,
Gen 42.17-18 "And he put them in prison for three days. On the third day, Joseph said to them: "Do this and live I fear G-d." - and they went back to their father.
1Kings 20.29 " And they were encamped opposite each other [for] seven days; and it was on the seventh day that [men of] battle drew closer and the children of Israel killed of Aram, one hundred thousand footmen in one day." - they fought the 7th day.
Esther 4.16 ""Go, assemble all the Jews who are present in Shushan and fast on my behalf, and neither eat nor drink for three days, day and night; also I and my maidens will fast in a like manner; then I will go to the king contrary to the law, and if I perish, I perish.""
following 5.1 " Now it came to pass on the third day, that Esther clothed herself regally, and she stood in the inner court of the king's house, opposite the king's house, and the king was sitting on his royal throne in the royal palace, opposite the entrance of the house."
2 Chronicles 10.5 "And he said to them, "Another three days, and return to me," and the people departed."
with 10.12 "And Jeroboam and all the people came to Rehoboam on the third day, as the king had spoken, saying, "Return to me on the third day.""
Gen 40.13 " In another three days, Pharaoh will number you [with the other officers], and he will restore you to your position, and you will place Pharaoh's cup into his hand, according to [your] previous custom, when you were his cupbearer."
with
40.18-19 "And Joseph replied and said, "This is its meaning: the three baskets represent three days. In another three days, Pharaoh will remove your head from you and hang you on a gallows, and the birds will eat your flesh off you.""
with
40.20 "Now it came about on the third day, Pharaoh's birthday, that Pharaoh made a feast for all his servants, and he counted the chief cupbearer and chief baker among his servants"
about Question 2
ok, I'll give you reference from NT:
Matthew 12:46-50 "46 While He was still talking to the multitudes, behold, His mother and brothers stood outside, seeking to speak with Him. 47 Then one said to Him, “Look, Your mother and Your brothers are standing outside, seeking to speak with You.”
48 But He answered and said to the one who told Him, “Who is My mother and who are My brothers?” 49 And He stretched out His hand toward His disciples and said, “Here are My mother and My brothers! 50 For whoever does the will of My Father in heaven is My brother and sister and mother.”"
Matthew 13:55 "Is this not the carpenter’s son? Is not His mother called Mary? And His brothers James, Joses, Simon, and Judas?"
So, do you understand that Jesus had brothers, from the context?