What does Exodus 9:20 mean?
The most basic expression of "faith" is acting on what is known about the past and present, despite what isn't known about the future. In that sense, some Egyptians express a vague form of "faith" in the God of Israel (Exodus 9:21). When warned about yet another plague (Exodus 7:21; 8:6, 17, 24; 9:6, 10), they act on advice to shelter their servants and animals (Exodus 9:18–19). They "fear" the Lord in that they respect His power and obey His instructions (Proverbs 1:7). This will protect those assets from an impending hailstorm (Exodus 9:18). Despite all that's happened, some Egyptians still refuse to listen (Exodus 9:21).This also hints at a growing rift between Pharaoh and his people. Pharaoh has been given many chances to obey (Exodus 5:1; 7:16; 8:1, 21; 9:1) but has stubbornly refused (Exodus 5:2; 7:13–14, 22; 8:15, 19, 32; 9:7), despite Egypt suffering catastrophe after catastrophe. Later, the Old Testament suggests that there were Egyptians who left with Israel (Exodus 12:38, 43, 45; Leviticus 22:25; Deuteronomy 14:21; 15:3). Soon, Pharaoh's advisors will begin pressuring him to negotiate (Exodus 10:7).