Why did jesus get baptised at 30 years old?

Answer 1

I don't believe that is ever explained.

The nearest I can come to an answer is that he waited until John the Baptist began to baptise people.... In the King James version, Matthew 3:1 says

Mat 3:1 In those days came John the Baptist, preaching in the wilderness of Judaea,

... there is no other 'introduction' to the baptism.

I think it is generally accepted that Jesus 'began' his mission at the Marriage Feast of Cana - which is only recorded in John's Gospel, the only one which makes no mention of his baptism.

Answer 2

Back then, people were not baptized as babies. They were baptized when they were adults so that it was their own decision and commitment to God. Many churches still work like that today, and many people are baptized as adults.

As for why Jesus was baptized at precisely 30, I suppose it had something to do with God's timing.

Answer 3

Because his father told him - he did only what God told him or showed him to do; as he said:

For I came down from heaven, not to do mine own will, but the will of him that sent me. (John 6.38)

Answer 4

Because God, his heavenly Father ordained it.