at midnight: Exodus 12:12, Exodus 11:4, Exodus 13:15; Job 34:20; 1 Thessalonians 5:2-3
the Lord smote: The infliction of this judgment on the Egyptians was most equitable; because, after their nation had been preserved by one of the Israelitish family, they had, contrary to all right, and in defiance of original stipulation, enslaved the people to whom they had been so much indebted, had murdered their offspring, and made their bondage intolerable. See Bryant, p. 160. Numbers 3:13, Numbers 8:17, Numbers 33:4; Psalms 78:51, Psalms 105:36, Psalms 135:8, Psalms 136:10; Hebrews 11:28; Hebrews 12:23
the firstborn of Pharaoh: Exodus 4:23, Exodus 11:5
dungeon: Heb. house of the pit, Isaiah 24:22, Isaiah 51:14; Jeremiah 38:6, Jeremiah 38:13; Zechariah 9:11