Isaiah 6:2 introduces the seraphim—the same beings from which one flies to Isaiah with a burning coal in 6:6.

In Leviticus 16:12, the high priest takes coals from the altar for the Day of Atonement — a liturgical parallel to this coal for cleansing.

In Ezekiel 10:2, burning coals taken from among cherubim parallel this live coal from the altar — both used for divine action.

In Acts 2:3, tongues of fire rest on the disciples — linking divine fire to speech, just as the coal touched Isaiah's lips.

In Revelation 8:3-5, an angel takes fire from the altar — a direct parallel to this coal taken for purification or judgment.

In Matthew 3:11, John speaks of baptism with fire — a purifying fire that echoes the coal's cleansing of Isaiah's lips.

Hebrews 1:7 describes angels as flames of fire—reminiscent of the fiery seraphim in Isaiah 6, associated with purification.