boundaries: the lines that mark where one piece of land ends and the next begins, and the ground those lines enclose
This is the feminine form of the ordinary Hebrew word for a border (גְּבוּל), and it shows up only ten times, almost always in the plural. The plural matters. This word rarely points at a single line. It names the whole set of lines that hem something in, whether that is one tribe's allotment, a nation's place among other nations, or the dry ground's hold against the sea.
The same word runs from the smallest scale to the largest, and the Bible treats those scales as one act:
- a farmer's field has an edge, and shifting it is theft (Job 24:2)
- a tribe receives its land measured out by its boundaries (Joshua 18:20)
- the nations themselves were parcelled out with boundaries fixed for them (Deuteronomy 32:8)
- the earth's own boundaries were set by God, alongside summer and winter (Psalm 74:17)
That is why the boast in Isaiah 10:13, where the Assyrian king says he removed the boundaries of peoples, is more than bragging about conquest. He is claiming to do exactly what Psalm 74 says God does. The lines are not treated as a human convention that a stronger army may redraw at will. They belong to the order God laid down, so moving one is closer to tearing at creation than to trespassing.
Because a boundary encloses something, the word can also slide from the line to the land inside it. That is why Numbers 32:33 is often translated "territories" rather than "borders": English usually needs two different words where Hebrew is content with one.