If you are doing research , I can recommend Michael Rood from rood awakening. and no I do not observe the sabbath for earthly rewards. I observe it to get close to God and to rest in Jesus our saviour and to hold communion with Him for what He has done for us on the cross. I have found the truth in Hebrew roots. However , whether we worship on a sunday or saturday , as long as we know where our salvation comes from . I personally accept the trinity. I hope have answered your question. Jesus came to fulfil the covenant, not to do away with it.God bless you and give you Shalom. (peace)I know that I have found peace in Yeshua (Jesus) I have found through the Hebrew roots , Jesus has come alive to me.