Where is Capernaum?
It's another town on the north shore of the Sea of Galilee.
Then why does the passage say that He went "down" to Capernaum when it lies north of Cana?
Cana is located at a higher elevation.
Who’s missing from those listed?
Joseph, who probably has already died since there is no mention of him after Jesus began His ministry.
Who went with Jesus, His disciples and Mary?
Jesus' "brothers" (John 2:12).
Jesus had brothers?
Yes, and sisters too.
How do we know that?
Matthew 13:55-56 states, ..."Is not His mother called Mary? And His brothers James, Joses, Simon, and Judas? And His sisters, are they not all with us?"... So according to the Bible, Mary had given birth to at least 5 sons and 2 daughters.
What does that mean about Mary’s alleged virginity throughout her life?
It’s a myth, and those who wish to propagate this myth try to twist the above passage in Matthew. They say that those brothers and sister must have been from Joseph's previous marriage. But there is not a shred of evidence to suggest that Joseph had been married before he married Mary. Or they try to assert that they must have been either biological cousins or "spiritual" brothers and sisters, again without any evidence. But there is another passage in Matthew that they cannot get around: "Then Joseph, being aroused from sleep, did as the angel of the Lord commanded him and took to him his wife, and did not know her till she had brought forth her firstborn Son. And he called His name Jesus" (Matthew 1:24-25). The expression, to "know" is consistently used throughout the Bible to indicate sexual relations, and the context of the passage above makes this evident. Saying that Joseph did not have sex with her "until" she had brought forth her firstborn son means that he did have sex with her thereafter. And "firstborn" son means that she had other sons.
What is Passover?
It's a feast that commemorates God's deliverance of His people from bondage in Egypt by pouring out His wrath on the land while sparing those who were marked by the blood of a lamb that had been sacrificed: (Exodus 12:1-14): "1 Now the Lord spoke to Moses and Aaron in the land of Egypt, saying, 2 “This month shall be your beginning of months; it shall be the first month of the year to you. 3 Speak to all the congregation of Israel, saying: ‘On the tenth of this month every man shall take for himself a lamb, according to the house of his father, a lamb for a household. 4 And if the household is too small for the lamb, let him and his neighbor next to his house take it according to the number of the persons; according to each man’s need you shall make your count for the lamb. 5 Your lamb shall be without blemish, a male of the first year. You may take it from the sheep or from the goats. 6 Now you shall keep it until the fourteenth day of the same month. Then the whole assembly of the congregation of Israel shall kill it at twilight. 7 And they shall take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat it. 8 Then they shall eat the flesh on that night; roasted in fire, with unleavened bread and with bitter herbs they shall eat it. 9 Do not eat it raw, nor boiled at all with water, but roasted in fire - its head with its legs and its entrails. 10 You shall let none of it remain until morning, and what remains of it until morning you shall burn with fire. 11 And thus you shall eat it: with a belt on your waist, your sandals on your feet, and your staff in your hand. So you shall eat it in haste. It is the Lord’s Passover. 12 ‘For I will pass through the land of Egypt on that night, and will strike all the firstborn in the land of Egypt, both man and beast; and against all the gods of Egypt I will execute judgment: I am the Lord. 13 Now the blood shall be a sign for you on the houses where you are. And when I see the blood, I will pass over you; and the plague shall not be on you to destroy you when I strike the land of Egypt. 14 So this day shall be to you a memorial; and you shall keep it as a feast to the Lord throughout your generations. You shall keep it as a feast by an everlasting ordinance."
What was the requirement for the lamb's condition?
It had to be "without blemish" (Exodus 12:5).
What does the lamb symbolize?
Jesus, whom according to Hebrews 4:15 is the only one "without sin".
What does the lamb's blood symbolize?
The blood Jesus shed on the cross to protect us from the wrath of God directed at sins.