Judges 9:19

19 If then you have done what is true and upright to Jerubbaal and his family this day, may you have joy in Abimelech, and may he have joy in you;

Judges 9:19 Meaning and Commentary

Judges 9:19

If ye then have dealt truly and sincerely with Jerubbaal and
his house this day
If they could in their consciences think and believe they had done well, and acted the faithful and upright part by him and his family, which he left with them to consider of:

then rejoice ye in Abimelech, and let him also rejoice in you;
may you be happy in him as a king, and he be happy in you as his subjects, and live peaceably and comfortably together; and this he suggests as a test of their former conduct, that should this alliance between Abimelech and them be attended with happiness, which he could not believe would be the case, then it would seem that they had done a right part by Gideon and his family; but if they should be unhappy together, as he supposed they would, then it would be clear that they had acted a base and disingenuous part by his father's family.

Judges 9:19 In-Context

17 (For my father made war for you, and put his life in danger, and made you free from the hands of Midian;

18 And you have gone against my father's family this day, and have put to death his sons, even seventy men on one stone, and have made Abimelech, the son of his servant-wife, king over the townsmen of Shechem because he is your brother;)

19 If then you have done what is true and upright to Jerubbaal and his family this day, may you have joy in Abimelech, and may he have joy in you;

20 But if not, may fire come out from Abimelech, burning up the townsmen of Shechem and Beth-millo; and may fire come out from the townsmen of Shechem and Beth-millo, for the destruction of Abimelech.

21 Then Jotham straight away went in flight to Beer, and was living there for fear of his brother Abimelech.