There it was; the true Light [was then] coming into the world – the genuine, perfect, steadfast Light – that illumines every person
He came into the world, and though the world was made through Him, the world did not recognise Him – did not know Him
He came to that which belonged to Him – to His own [domain, creation, things, world] – and they who were His own did not receive Him and did not welcome Him.
But to as many as did receive and welcome Him, He gave the authority [power, privilege, right] to become the children of God, that is, to those who believe in – adhere to, trust in and rely on – His name;
Who owe their birth neither to bloods, nor to the will of the flesh [that of physical impulse], nor to the will of man [that of a natural father], but to God. – They are born of God!
There is always a ‘but’. The rewards of this one are to become the children of God
v 13 They are born of God!