Final answer:
John came to bear witness of the Light in a religious or theological context, potentially referring to John the Baptist's role in heralding Jesus Christ's ministry as illustrated in Christian scripture.
Step-by-step explanation:
While numerous texts and interpretations might explain why someone named John came to bear witness to the Light, a common interpretation within the Christian tradition is that John refers to John the Baptist, who is known for heralding the coming of Jesus Christ, referred to as 'the Light' in the context of Christian scripture. This interpretation aligns with the Biblical portrayal of John as a forerunner to Christ’s ministry, as well as a witness to the presence of divine Light in the world, fulfilling a prophetic role and preparing the way for Jesus' teachings and salvation.