Back to the OP again as I have tried to do several times. Do these scriptures relate to each other?
Know therefore that the Lord thy God, he is God, the faithful God, which keepeth covenant and mercy with them that love him and keep his commandments to a thousand generations; Deuteronomy 7:9
Woe unto you, scribes and Pharisees, hypocrites! for ye pay tithe of mint and anise and cummin, and have omitted the weightier matters of the law,judgment, mercy, and faith: these ought ye to have done, and not to leave the other undone.Matthew 23:23
Then said Jesus unto them, When ye have lifted up the Son of man, then shall ye know that I am he, and that I do nothing of myself; but as my Father hath taught me, I speak these things. John 8:28
Did God tell Jesus to reveal these things concerning judgment, mercy, and faith that are supposed found by us in His Father's law?