Jesus used the Old Testament out of necessity, simply cos there was no other point of reference to teach Jews about God at that time.
Anyhow, his main way of teaching was not sitting there reciting empty verses from the Torah, wasnt his main method the parable and leading by example, thats not dogmatic.
By the way, how can you not turn on the old Testament it gets tiresome being apologetic for God's character flaws.
;)
