Revelation 12:16
And the earth helped the woman, and the earth opened her mouth, and swallowed up the flood which the dragon cast out of his mouth.
Cross-reference
Genesis 4:11
Parallel
Genesis 4:11 has the earth opening its mouth to receive Abel's blood — a parallel imagery of the earth acting as God's instrument.
Numbers 16:32
Allusion
Numbers 16:32 shows the earth opening its mouth to swallow rebels — the same imagery used here for protection, now repurposed against the dragon's flood.
Psalm 69:15
Contrast
Psalm 69:15 prays 'let not the deep swallow me' and 'pit close its mouth' — opposite outcome: here the earth's mouth swallows the threat instead.
Ezekiel 29:3
Allusion
Ezekiel 29:3 depicts Pharaoh as a monster in the Nile, linking to the dragon in Revelation as a beastly foe, both associated with waters.