<p>12:46 <i>I have come into the world as light</i>- This is how the prologue opens the Gospel, with the Lord personally represented as light shining in the darkness of the Jewish world. His 'coming into the world' was insofar as He revealed the light, and that only happened at the start of His ministry at age 30. This was when He came into the world. He was not the light of the world as a new-born baby desperate only for milk. His point of 'coming' into the world is defined as when He was the light of the world, which was at the beginning of His ministry. As He was sent into the world, so are we sent; and there is no question in our case that we were sent literally from Heaven to earth. Trinitarian thinking is very shoddy when it comes to verses such as these.</p><p><i>So that whoever believes in me may not remain in the darkness</i>- What in practice does this mean, to have Jesus as our light, and not to be remain in darkness? John's letters allude to this and in clear practical terms inform us that not loving our brother is abiding in darkness (1 Jn. 2:9,11). We cannot claim to believe in Jesus, to have Him as a merely intellectual light of correct theory- and not love our brother. Perhaps this explains the question raised in the commentary on :42 as to whether the unconfessed, very private and theoretical 'faith' of many of the leaders was acceptable. Because it was not confessed, it resulted in their condemning and crucifying God's Son- the deepest depth of not loving our brother.</p>