Songs 8:6
Set me as a seal on your heart, as a seal on your arm: for love is strong as death; jealousy is cruel as the grave: the coals thereof are coals of fire, which has a most vehement flame.
Torrey's Topical Textbook—AKJV

Isaiah 66:15
For, behold, the LORD will come with fire, and with his chariots like a whirlwind, to render his anger with fury, and his rebuke with flames of fire.
Torrey's Topical Textbook—AKJV