Isaiah 6:2
Above it stood the seraphims: each one had six wings; with twain he covered his face, and with twain he covered his feet, and with twain he did fly.
Cross-reference
In Isaiah 6:6, a seraphim flies to Isaiah with a coal — continuation of the same vision, showing the seraph's active role.
In Ezekiel 1:11, living creatures have wings that cover their bodies — same imagery of winged beings covering themselves.
Revelation 4:8 describes four living creatures with six wings crying 'Holy, holy, holy' — directly echoing the seraphim in Isaiah's vision.
Revelation 7:11 shows angels worshiping around the throne, directly echoing the seraphim's posture in Isaiah.
In Psalm 148:2, all angels are called to praise God — seraphim here are doing exactly that, crying 'Holy, holy, holy' in worship.
Hebrews 1:7 quotes Psalm 104:4 about angels as flames of fire, linking to the fiery seraphim in Isaiah.
Psalm 104:4 describes angels as flaming fire, connecting to the seraphim ('burning ones') in Isaiah's vision.
Exodus 25:20 describes cherubim covering the mercy seat with wings, paralleling seraphim covering their faces and feet with wings.
Exodus 37:9 repeats the cherubim wing description; same parallel to seraphim covering themselves with wings.
1 Kings 8:7 notes cherubim overshadowing the ark — a covering action parallel to seraphim covering faces and feet.
1 Kings 22:19 depicts the Lord enthroned with the heavenly host, similar to the seraphim attending in Isaiah's vision.
In Psalm 89:7, God is feared among the council of holy ones — seraphim are part of that heavenly council, showing awe.
Daniel 7:10 describes myriads serving before God's throne, mirroring the seraphim's service in Isaiah.
Luke 2:13 shows a multitude of angels praising God, echoing the seraphim's worship in heaven.