Adam Clarke on Jeremiah 32:7

The right of redemption is thine - The law had established that the estates of a family should never be alienated. If, therefore, a man through poverty was obliged to sell his patrimony, the nearest relative had a right to purchase it before all others, and even to redeem it, if it had been sold to another. This is what is called the right of goel, or kinsman, Lev 25:25. And in the year of jubilee the whole reverted to its ancient master Lev 25:13.