Deuteronomy 17:10-11; John 9:28-29

10 Then you shall do according to what they declare to you from that place that the Lord will choose. And you shall be careful to do according to all that they direct you. 11 According to the instructions that they give you, and according to the decision which they pronounce to you, you shall do. You shall not turn aside from the verdict that they declare to you, either to the right hand or to the left.

28 And they reviled him, saying, You are his disciple, but hwe are disciples of Moses. 29 We know that God has spoken to Moses, but as for this man, iwe do not know where he comes from.