What Does Exodus 3:19 Mean?

"But I know that the king of Egypt will not let you go unless compelled by a great hand." God prepares Moses for the reality of what awaits him in Egypt: Pharaoh will not comply.

The word "know" (Hebrew: yada) is the same term used for God's knowing of Israel's suffering in chapter 2: God knows Pharaoh with the same certainty with which he knows Israel. His foreknowledge of Pharaoh's resistance is not a passive observation but a factor already incorporated into the design of what is about to happen. The hardening of Pharaoh, which will unfold through ten plagues, is anticipated here in verse 19: God already knows that Pharaoh will require compulsion.

The phrase "unless compelled by a great hand" refers to YHWH's power that will be displayed through the plagues: the "strong hand" of God is the recurring descriptor for the power that brought Israel out of Egypt (Exodus 13:3, 9, 14, 16; Deuteronomy 5:15; 6:21). Moses is being told that Pharaoh's resistance is not an obstacle but a stage in the drama: the plagues will be the form taken by the great hand, and the plagues will become the memorial of what God did. Pharaoh's refusal is incorporated into the divine plan as the occasion for the plagues' revelation.

Paul's reflection on Pharaoh's resistance in Romans 9:17 cites Exodus 9:16: "For this very purpose I have raised you up, that I might show my power in you, and that my name might be proclaimed in all the earth." The divine foreknowledge of Pharaoh's resistance in verse 19 is rather than a prediction but a purpose: God intends to use Pharaoh's refusal as the occasion for the full display of his power. The obstinate Pharaoh becomes the canvas on which the God of Israel demonstrates his superiority over every power that claims to rival him.