Saint Matthias, 14th century, Workshop of Simone Martini
O ALMIGHTY God, who into the place of the traitor Judas didst choose thy faithful servant Matthias to be of the number of the twelve Apostles: Grant that thy Church, being alway preserved from false Apostles, may be ordered and guided by faithful and true pastors; through Jesus Christ our Lord. Amen.
FOR THE EPISTLE
IN those days Peter stood up in the midst of the disciples, and said, (the number of the names together were about an hundred and twenty,) Men and brethren, this Scripture must needs have been fulfilled, which the Holy Ghost by the mouth of David spake before concerning Judas, which was guide to them that took Jesus: for he was numbered with us, and had obtained part of this ministry. Now this man purchased a field with the reward of iniquity; and falling headlong he burst asunder in the midst, and all his bowels gushed out. And it was known unto all the dwellers at Jerusalem, in so much as that field is called in their proper tongue, Aceldama, that is to say, The field of blood. For it is written in the book of Psalms, Let his habitation be desolate, and let no man dwell therein; and, His bishoprick let another take. Wherefore, of these men which have companied with us all the time that the Lord Jesus went in and out among us, beginning from the baptism of John, unto that same day that he was taken up from us, must one be ordained to be a witness with us of his resurrection. And they appointed two, Joseph called Barsabas, who was surnamed Justus, and Matthias. And they prayed, and said, Thou, Lord, which knowest the hearts of all men, shew whether of these two thou hast chosen; that he may take part of this ministry and apostleship, from which Judas by transgression fell, that he might go to his own place. And they gave forth their lots; and the lot fell upon Matthias, and he was numbered with the eleven Apostles.
St. Matthew 11:25-end
AT that time Jesus answered and said, I thank thee, O Father, Lord of heaven and earth, because thou hast hid these things from the wise and prudent, and hast revealed them unto babes. Even so, Father, for so it seemed good in thy sight. All things are delivered unto me of my Father: and no man knoweth the Son, but the Father; neither knoweth any man the Father, save the Son, and he to whomsoever the Son will reveal him. Come unto me, all ye that labour and are heavy laden, and I will give you rest. Take my yoke upon you, and learn of me, for I am meek and lowly in heart: and ye shall find rest unto your souls. For my yoke is easy, and my burden is light.