Revelation 4:4 And round about the throne were four and twenty seats: and upon the seats I saw four and twenty elders sitting, clothed in white raiment; and they had on their heads crowns of gold.
(Could the four and twenty elders be those in the below paragraphs and verses? You decide).
The twelve tribes were those descended from Jacob, to whom God gave the name "Israel." They are Reuben, Simeon, Judah, Isachar, Zebulun, Benjamin, Dan, Naphtali, Gad, Asher, Ephraim, and Manasseh.
Matthew 10:2 Now the names of the twelve apostles are these; The first, Simon, who is called Peter, and Andrew his brother; James the son of Zebedee, and John his brother;
Matthew 10:3 Philip, and Bartholomew; Thomas, and Matthew the publican; James the son of Alphaeus, and Lebbaeus, whose surname was Thaddaeus;
Matthew 10:4 Simon the Canaanite, and Judas Iscariot, who also betrayed him.
Matthias was selected to replace Judas as recorded in Acts 1:15-26. The other man who was also in consideration was named Joseph or Barsabas, and surnamed Justus. Lots were cast and eventually Matthias was chosen. Acts 1:24-26 records the following, "And they prayed and said, “You, O Lord, who know the hearts of all, show which of these two You have chosen to take part in this ministry and apostleship from which Judas by transgression fell, that he might go to his own place.” And he was numbered with the eleven apostles.”
The Bible is sparse on additional details relating to Matthias, but it does say that Matthias was with Jesus since His baptism until his resurrection. Besides the book of Acts, Matthias isn’t mentioned anywhere else in the Bible. According to historical sources Matthias lived til 80 A.D. and spread the gospel on the shores of the Caspian and Cappadocia.
How about trying something different like studying the complete Bible my friends; try to put together a more complete picture. What a concept!