סִיג

scoria

Definition

The Hebrew word סִיג (çîyg) refers to the scum or dross that rises to the surface when metal is refined in a furnace. It is the worthless, impure waste material that is separated from and discarded to purify silver or other precious metals. In its biblical usage, it is almost exclusively a metaphor for moral or spiritual impurity. In Isaiah 1:22 and 1:25, it describes the corruption of God's people, while in Proverbs 25:4, it illustrates the process of removing wickedness from a king's presence. In Psalm 119:119, the psalmist declares that God treats the wicked of the earth like dross, to be discarded.

Biblical Usage

This word is used seven times, primarily in poetic and prophetic literature (Psalms, Proverbs, Isaiah, Ezekiel). Its usage is consistently metaphorical, representing something impure, worthless, or wicked that must be removed. In Proverbs 26:23, it describes a wicked heart concealed by smooth words. In Ezekiel 22:18-19, it powerfully illustrates how the people of Israel have become like the dross of silver, gathered for God's fiery judgment. The pattern is one of divine purification through the removal of corruption.

Etymology

Derived from the root סוּג (sûg, H5472), which carries the basic meaning of 'to move back, turn away, or be refractory.' The noun סִיג thus developed the sense of 'refuse'—that which is turned away from or rejected during a refining process. This connection highlights the inherent idea of separation and rejection of what is undesirable.

Semantic Range

This word is theologically significant as a central metaphor for God's judgment and purification of His people. It vividly portrays sin as a contaminating impurity that must be removed for holiness to remain. The imagery teaches that God's refining work is intentional and severe, separating the valuable from the worthless. Understanding this Hebrew term enriches the reading of passages about divine judgment, showing it is not merely punitive but a necessary process to restore purity, as seen in Isaiah 1:25 where God promises to 'smelt away your dross as with lye.'

In the ancient Near East, metallurgy was a common and understood process. Everyone knew that to obtain pure, valuable silver, the ore had to be heated in a crucible until the impurities (the dross or סִיג) separated and could be skimmed off and thrown away. This tangible, everyday process gave the prophets a powerful and immediately understandable image for spiritual truth.

פְּסֹלֶת (pesoleth, H5507) — also 'dross,' used in parallel with סִיג in Ezekiel 22:18, emphasizing the concept of refuse. בְּדִיל (bedîyl, H914) — 'alloy, tin,' often a metaphor for a diluted or corrupted mixture (e.g., Isaiah 1:25).

Word Details

Scripture References