The entire tribe of Dan is absent from the list of those tribes which are to be found in heaven.
Here is the list given in Revelation 7.
And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel. (Revelation 7:4, KJV)
Of the tribe of Juda were sealed twelve thousand.
Of the tribe of Reuben were sealed twelve thousand.
Of the tribe of Gad were sealed twelve thousand. (7:5)
Of the tribe of Aser were sealed twelve thousand.
Of the tribe of Nephthalim were sealed twelve thousand.
Of the tribe of Manasses were sealed twelve thousand. (7:6)
Of the tribe of Simeon were sealed twelve thousand.
Of the tribe of Levi were sealed twelve thousand.
Of the tribe of Issachar were sealed twelve thousand. (7:7)
Of the tribe of Zabulon were sealed twelve thousand.
Of the tribe of Joseph were sealed twelve thousand.
Of the tribe of Benjamin were sealed twelve thousand. (7:8)
Dan is not listed (neither is Ephraim--but the focus for this question is Dan). But Dan was clearly a son of Jacob (Israel), and among the tribes in the wilderness. As of the time when they sent spies into Canaan and selected a representative from each tribe, we see the following:
1 And the LORD spake unto Moses, saying, 2 Send thou men, that they may search the land of Canaan, which I give unto the children of Israel: of every tribe of their fathers shall ye send a man, every one a ruler among them. 3 And Moses by the commandment of the LORD sent them from the wilderness of Paran: all those men were heads of the children of Israel.
4 And these were their names:
of the tribe of Reuben, Shammua the son of Zaccur.
5 Of the tribe of Simeon, Shaphat the son of Hori.
6 Of the tribe of Judah, Caleb the son of Jephunneh.
7 Of the tribe of Issachar, Igal the son of Joseph.
8 Of the tribe of Ephraim, Oshea the son of Nun.
9 Of the tribe of Benjamin, Palti the son of Raphu.
10 Of the tribe of Zebulun, Gaddiel the son of Sodi.
11 Of the tribe of Joseph, namely, of the tribe of Manasseh, Gaddi the son of Susi.
12 Of the tribe of Dan, Ammiel the son of Gemalli.
13 Of the tribe of Asher, Sethur the son of Michael.
14 Of the tribe of Naphtali, Nahbi the son of Vophsi.
15 Of the tribe of Gad, Geuel the son of Machi.
16 These are the names of the men which Moses sent to spy out the land. And Moses called Oshea the son of Nun Jehoshua. (Numbers 13:1-16, KJV)
Dan was the eldest son of Rachel's maid Bilhah--the first of the maids to be given to Jacob by his two wives.
1 And when Rachel saw that she bare Jacob no children, Rachel envied her sister; and said unto Jacob, Give me children, or else I die. 2 And Jacob's anger was kindled against Rachel: and he said, Am I in God's stead, who hath withheld from thee the fruit of the womb? 3 And she said, Behold my maid Bilhah, go in unto her; and she shall bear upon my knees, that I may also have children by her. 4 And she gave him Bilhah her handmaid to wife: and Jacob went in unto her. 5 And Bilhah conceived, and bare Jacob a son. 6 And Rachel said, God hath judged me, and hath also heard my voice, and hath given me a son: therefore called she his name Dan. (Genesis 30:1-6, KJV)
Dan is Rachel's eldest surrogate son: Why is he not listed among those in heaven?