to sink low: to hang slack, run dry, or be worn down until almost nothing is left
Picture something losing its hold and going down: a channel of water thinning to a trickle, a limb going slack, a people ground away until there is almost nothing left of them. That one picture holds every use of this verb together.
Most often the subject is a person or a nation, and the verb marks the point where strength runs out. Israel is worn down to nothing under Midian, the wealth of Jacob thins away, and a psalmist says simply that he has been brought very low. It is the verb behind a cry for rescue rather than the label of a social class: the related adjective (דל) names the person who is already low and poor, while this verb names the sinking itself.
The older, more physical uses are still visible in a handful of verses:
- water in the canals of Egypt drops until the channels run dry
- eyes worn out with watching for help begin to fail
- miners on their ropes dangle and sway far from anyone
- the legs of a lame man hang slack and useless
Because the underlying image is sagging and running out rather than poverty as such, English Bibles reach for a different word almost every time: brought low, impoverished, dried up, languish, hang.