Acts 1:15-26 The Disciples Regather As The 12

In those days Peter stood up among the believers (a group numbering about a hundred and twenty) and said, “Brothers and sisters, the Scripture had to be fulfilled in which the Holy Spirit spoke long ago through David concerning Judas, who served as guide for those who arrested Jesus.  He was one of our number and shared in our ministry.”(With the payment he received for his wickedness, Judas bought a field; there he fell headlong, his body burst open and all his intestines spilled out.  Everyone in Jerusalem heard about this, so they called that field in their language Akeldama, that is, Field of Blood.) “For,” said Peter, “it is written in the Book of Psalms:

“‘May his place be deserted;
    let there be no one to dwell in it,’

and,

“‘May another take his place of leadership.’ Therefore it is necessary to choose one of the men who have been with us the whole time the Lord Jesus was living among us,  beginning from John’s baptism to the time when Jesus was taken up from us. For one of these must become a witness with us of his resurrection.”So they nominated two men: Joseph called Barsabbas (also known as Justus) and Matthias.  Then they prayed, “Lord, you know everyone’s heart. Show us which of these two you have chosen  to take over this apostolic ministry, which Judas left to go where he belongs.”  Then they cast lots, and the lot fell to Matthias; so he was added to the eleven apostles.

In the study of numerology, the number "12" is the number of governmental perfection.  It was not specifically for this reason that Peter lead the discussion to choose one to replace Judas Iscariot, but it was as was written in the Psalms    Nevertheless, another eye-witness to the work and the deeds of Jesus was chosen and according to the text the choice was that of the Holy Spirit.  In terms of canonocity, in order to be an apostle of Jesus Christ one must be an eye witness so that the testimony is true.  So the disciples are gathered once again as the 12 disciples of Jesus, but in the days to come another witness to the Risen Christ will be introduced who is Paul of Tarsus.

Daily Prayer:  Most Holy Jesus, just as the disciples in Jerusalem depended on the movement of the Holy Spirit, let the I who am a disciple of Jesus Christ receive similar leading today.  Make me sensitive to His movements so that I can be sure of His guidance.  In Your Holy name I pray Amen.