'Maternal' in the Bible

Abimelech son of Jerubbaal went to his mother’s brothers at Shechem and spoke to them and to all his maternal grandfather’s clan, saying,

For the Lord says this, “Behold, I extend peace to her (Jerusalem) like a river,And the glory of the nations like an overflowing stream;And you will be nursed, you will be carried on her hip and [playfully] rocked on her knees.