This is impossible to say as nowhere does The Bible indicate his age. However, there are some clues. The life expectation in those days was only around 45 years of age, and so he would have been younger than this. There are some indications that Mark was the 'young man' who fled naked at Jesus' arrest (Mark 14: 51). Also he was most probably the 'young man' who led the disciples to the Upper Room for the Last Supper by carrying a pitcher of water (an unusual sight - this was normally women's work) (Mark 14: 13). The first reference is the only time that this particular man is mentioned in any of the Gospels and suggests that it is Mark mentioning his own part in the arrest. The second reference also occurs in Luke's account - one of the passages that Luke used from Mark's gospel. A John Mark is mentioned much later in Paul's accounts who is probably one and the same person. He survived many years after Jesus - long enough to write his account during the first persecution of Christians a few decades later. Therefore Mark must have been quite young at the time of Jesus' ministry. He was almost certainly one of the 72 who followed Jesus (outside the 12 disciples) . Jewish boys were regarded as adult at their Bahmizvahs at the age of 14. If Mark was described as a 'young man' he would have been somewhere between the age of 15 - 22 or so at the time of Jesus' ministry if all the parts of the jigsaw are to fit these facts.
In Galatians 5:11 Paul tells us that he had once preached circumcision, suggesting that he was not only an intellectual but a Jewish priest, so he was probably not a young man when he commenced his Christian ministry. However, we do not really know how old Paul was at the time.
Traditionally 30 yrs old, which was the age at which rabbis began to preach and gather followers.
Jesus was thirty years old , and did his ministry for three and a half years.
His fellow-laborer
Mark's chief meaning is that Jesus had the power and authority of God, and that the suffering and resurrection of Christ was the standard to hold against his whole ministry.
The possessive form for the noun ministry is ministry's.
Ministry of internal affairs
He taught around the area of Palestine.
Yes, from Jesus' twelfth year until he resurfaced at age 30 to begin his ministry.
Jesus began His ministry at the age of 30 when He was baptized by John and filled with the Holy Spirit. Read John 1:29-34.
From the age of twelve until He was baptized and began His ministry at "about" the age of thirty, Jesus apparently dwelt in Nazareth. See Luke 2:51, 52; Mark 1:9.
Jesus started his ministry after his baptism, at the age of 30 years.
Paul and Mark
His fellow-laborer
Jesus started his ministry after his baptism , at the age of 30 years.Luke 3:23a - Now Jesus Himself began His ministry at about thirty years of age, [NKJV]
In the Gospels of Matthew, Mark, Luke and John.
I'm sorry, but this depends upon what you mean by "begin". Jesus was born in 3 AD, according to most scholars today, so that could be the beginning. He began his ministry at age 30, or AD 33, if that is the start of Christianity. His ministry lasted 3 years, so his crucifixion and resurrection occurred in AD 36, so that also would be a good start date.
Mark A. Rouch has written: 'Competent ministry' -- subject(s): Clergy, Post-ordination training
II Timothy 4:11 - Only Luke is with me. Take Mark, and bring him with thee: for he is profitable to me for the ministry. (KJV)
Reindeer bulls typically begin breeding around the 1 1/2 year old mark.