What Is Setim wood in the Bible?
Plant
A desert tree, the acacia. The Ark of the Covenant was made from its wood.
Where it appears in the Bible
Exodus 25:10
What the Bible says
Exodus 25:10
Frame an ark of setim wood, the length whereof shall be of two cubits and a half: the breadth, a cubit and a half: the height, likewise, a cubit and a half.
Douay-Rheims Bible (Challoner revision), public domain.
Source: Exodus 25:10 (the NAB, on vatican.va, says “acacia wood”)