Biblical literature is inadequate for determining what Jesus may or may not have known. A Christian is free to accept the suggestions of biblical texts as determinative in this and other matters, or not. And "denying scripture," i.e. judging it inadequate for determining certain matters, including on the natures of God and Jesus, is not at all an embarrassment for a good Christian -- unless the Christian intends to be "good" by the measure of a church or theology that makes an idol of the Bible. Fortunately for RCs, Vatican 2 teaches that God indeed allowed to be written in the Bible those things which are for our benefit, without being over-scrupulous in deciding for us what "our benefit" might include.