For those who desired to be under the law..

^{John 5:45-47 (Amplified bible)}
(Jesus:)Put out of your minds the thought and do not suppose [as some of you are supposing] that I will accuse you before the Father. There is one who accuses you--it is Moses, the very one on whom you have built your hopes [in whom you trust].

For if you believed and relied on Moses, you would believe and rely on Me, for he wrote about Me [personally].

But if you do not believe and trust his writings*, how then will you believe and trust My teachings? [How shall you cleave to and rely on My words?]

* I supposed here Jesus meant; if you do not believe and trust his(moses) writings about me(Jesus)