Which is the first commandments of all?

29: And Jesus answered him, The first of all the commandments is, Hear, O Israel; The Lord our God is one Lord:

30: And thou shalt love the Lord thy God with all thy heart, and will all thy soul, and with all thy mind, and with all thy strength; this is the first commandment.

31: And the second is like, namely this, Thou shall love thy neighbour as thyself. There is none other commandment greater than these.

Mark 12:29-31