Exodus 24:12

The public ceremony of sealing the covenant being over, Moses is called up to receive further instructions, which we have in the following chapters. I. He is called up into the mount, and there he remains six days at some distance. Orders are given him (Exo 24:12): Come up to the mount, and be there, that is, "Expect to continue there for some considerable time." Those that would have communion with God must not only come to ordinances, but they must abide by them. Blessed are those that dwell in his house, not that merely call there. "Come up, and I will give thee a law, that thou mayest teach them." Moses taught them nothing but what he had received from the Lord, and he received nothing from the Lord but what he taught them; for he was faithful both to God and Israel, and did neither add nor diminish, but kept close to his instructions. Having received these orders, 1. He appointed Aaron and Hur to be as lords-justices in his absence, to keep the peace and good order in the congregation, Exo 24:14. The care of his government he would leave behind him when he went up into the mount, that he might not have that to distract his mind; and yet he would not leave the people as sheep having no shepherd, no, not for a few days. Good princes find their government a constant care, and their people find it a constant blessing. 2.

— Matthew Henry's Concise Commentary (public domain)

I will give thee tables of stone--The ten commandments, which had already been spoken, were to be given in a permanent form. Inscribed on stone, for greater durability, by the hand of God Himself, they were thus authenticated and honored above the judicial or ceremonial parts of the law.

— Jamieson-Fausset-Brown Commentary (public domain)