Apostle John was one of the twelve disciples of Jesus. Traditionally, John is believed to be the author of the Gospel of John, the Three Epistles, and the Book of Revelation, and is considered the beloved disciple of Jesus.

Called to become an apostle
According to the Bible, John followed John the Baptist and was introduced to Jesus Christ, where he lived with him on that day. (John 1:35-40)
Later, after experiencing the miracles of Jesus and obtaining a large number of fish, he and his brothers Jacob and Peter decided to let go of everything and respond to the Lord's call, following Jesus throughout their lives.
Transforming personality
Originally, he and his brother Jacob were both impulsive thunder sons (Mark 3:17). He once saw someone driving out demons in the name of Jesus and forbade them. (Mark 9:38)
His mother begged Jesus for status on behalf of his two brothers. (Matthew 20:20-21)
From John's later performances and letters, he often emphasized the lesson of love and instructed believers to always remember the command of "love each other.". (1 John 2:7-8)
It is evident that he has undergone a significant transformation under the guidance he has received.
When John narrates himself in the Gospels, he never mentions his own name and only refers to himself as the "beloved disciple of the Lord" (John 13:23; 21:20), which some people use as a manifestation of John's emphasis on "love" teaching.
Under the heavy trust of Jesus
When Jesus was crucified and died, he was entrusted with the care of his mother. On that day, take Mary to her own house. (John 19:25-27)
Suffer from coercion
According to Tertullian, John suffered severe persecution for preaching and was later exiled to the island of Patmos.

In the New Testament, the Apostle John wrote one Gospel book - the Gospel of John, three epistles - the first, second, and third books of John, and also wrote the Book of Revelation. Except for Luke and the Apostle Paul, he wrote more than any other biblical author. The Bible records many scriptures about his personality and character. In fact, most of our understanding of John comes from the scriptures he wrote. We see his views on Jesus Christ in the Gospels; We also noticed how he dealt with some matters related to the church in the New Testament letters; In the Book of Revelation, we can even know what will happen in the future from God's vision.
Both the Bible and church history record that John played an important role in early church history. He is one of the closest inner circle figures of Jesus, but he is not the most powerful apostle. He is Jacob's younger brother, and in the first twelve chapters of Acts, he often accompanies Peter. Peter is in front of the stage, while he is backstage.
John is called the "Apostle of Love" because he talks about the importance of love more than any other New Testament author. Especially emphasizing the love of Christians for Jesus Christ; He also talked about Christ's love for the church; At the same time, it also mentions the mutual love between believers. His writing is full of the spirit of love. Of course, he learned this kind of love from Jesus Christ, but in fact, this kind of love was not his original nature. He was originally a rough, angular, and individualistic person, not a very tolerant one.
He has ambition and enthusiasm, but he is a bit irritable. Later, as he grew older, the debts we saw under the control of the Holy Spirit became his assets, and he became very mature. The biggest weakness becomes the most powerful asset. So he became a role model for us to grow in Christ. The power of the Lord appears complete in our weakness, and obviously also in his weakness.

Spread the word everywhere
After the arrival of the Holy Spirit on Pentecost in 33 AD, John and other apostles eagerly spread the salvation of Jesus. The Bible records that John often worked with Peter and performed miracles at the entrance of the temple (Acts 3:1-10); Bravely testify before the Jewish Council (Acts 4:13); Preach in Samaria. (Acts 8:14)
Enlightenment from Demeng
John was passionate about God's teachings and was inspired to write the life of Jesus - the Gospel of John. John was inspired to write the first, second, and third books of John, encouraging believers to show a spirit of love for each other and live a holy life; In terms of faith, encourage believers to overcome the temptation and destruction of heresy. When he was exiled to the island of Patmos, Jesus revealed the last events to him and asked him to record them one by one, writing them in the Book of Revelation.