Bartholomew the Apostle most known as related to the Descent of the Holy Spirit on the Day of Pentecost. After that day, he and the holy Apostle Philip started to preach the Gospel in Syria and Asia Minor. While they were spreading the gospel, they wandered through various cities, and then met up again.
In Mathew 10:2 it is written:
“These are the names of the twelve apostles: first, Simon (who is called Peter) and his brother Andrew; James son of Zebedee, and his brother John; Philip and Bartholomew; Thomas and Matthew the tax collector; James son of Alphaeus, and Thaddaeus; Simon the Zealot and Judas Iscariot, who betrayed him”.
According to the Synaxarium of the Coptic Orthodox Church, his martyrdom is usually commemorated on the first day of the Coptic Calendar. This is the first day of the month of Thout, which is currently September 11, also corresponding to August 29 in the Julian Calendar. His feast is usually June 11 in Eastern Christianity and August 24 in the Lutheran Church–Missouri Synod, Anglican Communion and both forms of the Roman Rite of the Catholic Church.
He also witnessed the Ascension, according to the Acts 1:13, which says that “When they arrived, they went upstairs to the room where they were staying. Those present were Peter, John, James and Andrew; Philip and Thomas, Bartholomew and Matthew; James son of Alphaeus and Simon the Zealot, and Judas son of James”.
In each occasion he is named, he is in the company of Philip. After the Ascension, Bartholomew went on a missionary tour to India, where he also left behind a copy of the Gospel of Matthew. After India, he went to the Greater Armenia.