euteronomy 17
8 If there arise a matter too hard for thee in judgment, between blood and blood, between plea and plea, and between stroke and stroke, even matters of controversy within thy gates; then shalt thou arise, and get thee up unto the place which the LORD thy God shall choose.
9 And thou shall come unto the priests the Levites, and unto the judge that shall be in those days; and thou shalt inquire; and they shall declare unto thee the sentence of judgment.
10 And thou shalt do according to the tenor of the sentence, which they shall declare unto thee from that place which the LORD shall choose; and thou shalt observe to do according to all that they shall teach thee.
11 According to the law which they shall teach thee, and according to the judgment which they shall tell thee, thou shalt do; thou shalt not turn aside from the sentence which they shall declare unto thee, to the right hand, nor to the left.
12 And the man that doeth presumptuously, in not hearkening unto the priest that standeth to minister there before the LORD thy God, or unto the judge, even that man shall die; and thou shalt exterminate the evil from Israel.
1 “These are the statutes and judgments which you shall be careful to observe in the land which the LORD God of your fathers is giving you to possess, all the days that you live on the earth.
It wasn't until Deut 17, that Moses got to the commandments concerning courts & court officers as none were in affect for them to learn from. The children were still in the desert. YHVH was the ultimate judge and Moses the high officer of HIS court in cases where the tribal leaders were not able to reconcile differences within their own camp. And I might suggest, also disputes between tribes came before Moses who only took them to YHVH if he could not find reconciliation.(Deut 18:13-26)