Acts 1:24-26
(24) And they prayed and said, You, O Lord, who know the hearts of all, show which of these two You have chosen
(25) to take part in this ministry and apostleship from which Judas by transgression fell, that he might go to his own place.
(26) And they cast their lots, and the lot fell on Matthias. And he was numbered with the eleven apostles. (NKJV)
In 1892, Paul was the "12th apostle."
Watch Tower Reprints: The instance of this lesson affords also a striking illustration of the Lord's personal oversight and supervision of the interests of his Church, both as a company and as individuals. By the loss of Judas a vacancy had occurred in the company of the apostles, which vacancy the apostles themselves endeavored to fill by their election of Matthias. (Acts 1:26) This they had no authority to do, but, presuming such to be the Lord's will, they chose two and asked the Lord to indicate which of the two whom they had selected would be his choice; and when the lot fell upon Matthias-- for it must of course fall on one of the two-- the eleven accepted him as the Lord's choice for the place of Judas. But the sequel showed that the Lord merely ignored their presumption in the matter, and in his own time and way chose Saul of Tarsus, a man at heart devoted to the service of God and needing only to be enlightened by the truth when all his consecrated powers would be fully enlisted in the blessed work of bearing the name of Christ to the Gentiles as well as to the Jews. And this Saul, afterward called Paul, was the most noted, self-sacrificing and efficient of all the apostles. (Saul of Tarsus Converted, September 1892, Vol. 13, No. 17, page 1444)
https://www.watchtowerwayback.org/jw-wb/English/Magazines/The%20Watchtower/1892%20The%20Watchtower.pdf
In 1921, Matthias was the "12th apostle."
The Watchtower: Can we suppose that the spirit of discernment which rested on Peter and by which he detected fraud in Ananias and Sapphira (Acts 5:3, 4) could not detect the fact that one was masquerading in the very ranks of the apostles who was not such—if it be true that Matthias was no apostle? Surely not. (Paul's Labor and Epistles, November 15, 1921, Vol. 42, No. 22, page 351)
In 1951, Paul was the "12th apostle."
The Watchtower: But by casting lots to find one to “take the place of this ministry and apostleship, from which Judas deviated”, Peter and those with him were acting in advance of the Lord Jesus Christ and without any instruction from him. (Acts 1:20, 25 NW) They did not wait to “become clothed with power from on high”, to “be baptized in holy spirit not many days after this”, and hence this pre-Pentecostal selection of Matthias was not done under the guidance of the holy spirt.—Luke 24:49; Acts 1:5, NW...But that a replacement, and only one, for Judas was selected in fulfillment of Psalm 109:8 is made certain by Revelation 21:14, which refers to “the twelve apostles of the Lamb”. That replacement was chosen by Christ Jesus, just as were the original twelve apostles. Was not Paul specially chosen, Christ the spirit creature spectacularly manifesting himself to Paul? Concerning Paul Jesus said to Ananias: “This man is a chosen vessel to me to bear my name to the nations as well as to kings and the sons of Israel.” (Acts 9:15, NW) Jesus sent Paul forth, and Paul was excelled by no other “sent-forth one” or apostle of Christ. (Questions From Readers, December 15, 1951, page 763)
https://wol.jw.org/en/wol/d/r1/lp-e/1951925
In 1971, Matthias was reinstated by the Jehovah's Witnesses as the "12th apostle."
The Watchtower: The evidence reveals that, while Paul was an apostle of Jesus Christ, he is not presented by the Bible as one of the "twelve apostles"...Accordingly the lot indicated Jehovah's choice of Matthias.—Prov. 16:33. (Questions From Readers, May 15, 1971, page 319)
https://wol.jw.org/en/wol/d/r1/lp-e/1971368
(24) And they prayed and said, You, O Lord, who know the hearts of all, show which of these two You have chosen
(25) to take part in this ministry and apostleship from which Judas by transgression fell, that he might go to his own place.
(26) And they cast their lots, and the lot fell on Matthias. And he was numbered with the eleven apostles. (NKJV)
In 1892, Paul was the "12th apostle."
Watch Tower Reprints: The instance of this lesson affords also a striking illustration of the Lord's personal oversight and supervision of the interests of his Church, both as a company and as individuals. By the loss of Judas a vacancy had occurred in the company of the apostles, which vacancy the apostles themselves endeavored to fill by their election of Matthias. (Acts 1:26) This they had no authority to do, but, presuming such to be the Lord's will, they chose two and asked the Lord to indicate which of the two whom they had selected would be his choice; and when the lot fell upon Matthias-- for it must of course fall on one of the two-- the eleven accepted him as the Lord's choice for the place of Judas. But the sequel showed that the Lord merely ignored their presumption in the matter, and in his own time and way chose Saul of Tarsus, a man at heart devoted to the service of God and needing only to be enlightened by the truth when all his consecrated powers would be fully enlisted in the blessed work of bearing the name of Christ to the Gentiles as well as to the Jews. And this Saul, afterward called Paul, was the most noted, self-sacrificing and efficient of all the apostles. (Saul of Tarsus Converted, September 1892, Vol. 13, No. 17, page 1444)
https://www.watchtowerwayback.org/jw-wb/English/Magazines/The%20Watchtower/1892%20The%20Watchtower.pdf
In 1921, Matthias was the "12th apostle."
The Watchtower: Can we suppose that the spirit of discernment which rested on Peter and by which he detected fraud in Ananias and Sapphira (Acts 5:3, 4) could not detect the fact that one was masquerading in the very ranks of the apostles who was not such—if it be true that Matthias was no apostle? Surely not. (Paul's Labor and Epistles, November 15, 1921, Vol. 42, No. 22, page 351)
In 1951, Paul was the "12th apostle."
The Watchtower: But by casting lots to find one to “take the place of this ministry and apostleship, from which Judas deviated”, Peter and those with him were acting in advance of the Lord Jesus Christ and without any instruction from him. (Acts 1:20, 25 NW) They did not wait to “become clothed with power from on high”, to “be baptized in holy spirit not many days after this”, and hence this pre-Pentecostal selection of Matthias was not done under the guidance of the holy spirt.—Luke 24:49; Acts 1:5, NW...But that a replacement, and only one, for Judas was selected in fulfillment of Psalm 109:8 is made certain by Revelation 21:14, which refers to “the twelve apostles of the Lamb”. That replacement was chosen by Christ Jesus, just as were the original twelve apostles. Was not Paul specially chosen, Christ the spirit creature spectacularly manifesting himself to Paul? Concerning Paul Jesus said to Ananias: “This man is a chosen vessel to me to bear my name to the nations as well as to kings and the sons of Israel.” (Acts 9:15, NW) Jesus sent Paul forth, and Paul was excelled by no other “sent-forth one” or apostle of Christ. (Questions From Readers, December 15, 1951, page 763)
https://wol.jw.org/en/wol/d/r1/lp-e/1951925
In 1971, Matthias was reinstated by the Jehovah's Witnesses as the "12th apostle."
The Watchtower: The evidence reveals that, while Paul was an apostle of Jesus Christ, he is not presented by the Bible as one of the "twelve apostles"...Accordingly the lot indicated Jehovah's choice of Matthias.—Prov. 16:33. (Questions From Readers, May 15, 1971, page 319)
https://wol.jw.org/en/wol/d/r1/lp-e/1971368