They didn't claim to be, you illiterate dumbfuck.
They said "a light", not "the light".
Go count how many times the disciples of Christ were called the sons (plural) of God.
Not just one light.
Many lights, of which YOU are not one, but the anon you are responding to, you do not have the wisdom to know whether they are or not.
And you should probably shut the fuck up about things you know nothing of. Just an fyi.