Here's a breakdown of its etymology:
* ἀπόστολος (apostolos): This is the Greek word for "apostle" and literally means "one sent forth" or "messenger".
* ἀπό (apo): This prefix means "from" or "away from".
* στολή (stole): This word means "equipment", "clothing", or "sending".
So, the word "Apostle" originally referred to someone who was sent forth with a specific mission or purpose. In the Christian context, the Apostles were chosen by Jesus to spread his teachings and establish his church.