What does Exodus 12:23 mean?
The final plague on Egypt (Exodus 7:21; 8:6, 17, 24; 9:6, 10, 24; 10:14, 23) will be the most terrible. God will kill all the firstborn (Exodus 11:4–6), including those of livestock and royalty. Israel will be spared because the Lord provides them with a means to escape judgment. This involves the use of blood taken from a sacrificed, flawless lamb (Exodus 12:5–6). Those who trust His directions will survive (Exodus 12:12–13). Here, the message clarifies that the people must remain under the protection of that symbolic blood—those who are exposed will not be safe.In Hebrew, the word translated as "destroyer" is mashit, from the root word shachath. Related words describe what the plague of flies did to Egypt (Exodus 8:24), what the flood did to earth (Genesis 6:17), or what weakness in the face of evil does to a righteous man (Proverbs 25:26). Scripture is vague on who or what this "destroyer" of the Passover is (Hebrews 11:28). Many believe it to be an angel of some kind (Genesis 19:1, 13; Psalm 78:49; Isaiah 37:36).