Exodus 28:11

28:11 You are to engrave the two stones with the names of the sons of Israel with the work of an engraver in stone, like the engravings of a seal; ¹  you are to have them set ²  in gold filigree ³  settings.

Exodus 31:18

31:18 He gave Moses two tablets of testimony when he had finished speaking with him on Mount Sinai, tablets of stone written by the finger of God. ⁴ 

[28:11]  ¹ sn Expert stone or gem engravers were used to engrave designs and names in identification seals of various sizes. It was work that skilled artisans did.

[28:11]  ² tn Or “you will mount them” (NRSV similar).

[28:11]  ³ tn Or “rosettes,” shield-like frames for the stones. The Hebrew word means “to plait, checker.”

[31:18]  ⁴ sn The expression “the finger of God” has come up before in the book, in the plagues (Exod 8:15) to express that it was a demonstration of the power and authority of God. So here too the commandments given to Moses on stone tablets came from God. It too is a bold anthropomorphism; to attribute such a material action to Yahweh would have been thought provoking to say the least. But by using “God” and by stating it in an obviously figurative way, balance is maintained. Since no one writes with one finger, the expression simply says that the Law came directly from God.