to sink into poverty: to fall from having enough to live on into not having enough.
The picture behind this verb is going down. A closely related Hebrew verb (מָכַךְ) is used of a roof that sags and of proud people brought low, and this word takes that same downward picture and applies it to money and property. Someone who was standing on his own is now going under.
Most Hebrew words for poverty name a condition or a class of people: the afflicted (עָנִי), the needy who must beg (אֶבְיוֹן), the weak and reduced (דַּל). This word is different. It names the fall itself, and it is used of a "brother," a fellow Israelite who holds a share of the family land, at the moment he starts to lose it. So an English "is poor" quietly changes the subject: the Hebrew is about a man in motion, not a man in a category.
All five uses sit in Israel's law, and four of them open a fresh case with the same words, "if your brother sinks low." Each time the fall has gone one step further:
- he sells off part of the family land,
- his own resources give out and he needs help to survive,
- he sells himself into service to a fellow Israelite,
- he sells himself to a foreigner settled in the land.
Each stage sets off a remedy designed to stop the slide rather than punish it: a relative buys the land back, help is given without interest, and a man who has sold himself is treated as a hired worker and goes free in the year of release. The one use outside that chapter is quieter. A person who has promised a gift to God cannot afford the fixed price, so the priest sets a sum within his reach.