Walk through Amos, verse by verse, with the great Bible Commentaries of Matthew Henry (1662 - 1714) & Adam Clarke (1760 - 1832)
5:15
5:15
Hate the evil, and love the good, and establish judgment in the gate: it may be that the LORD God of hosts will be gracious unto the remnant of Joseph.
KJV
{Hate ye evil, and love ye good, and ordain ye in the gate doom (and ordain ye justice in the court); if peradventure the Lord God of hosts have mercy on the remnants of Joseph.} Wycliffe's Bible
Hate the evil, and love the good - What ruins you, avoid; what helps you, cleave to. And as a proof that you take this advice, purify the seats of justice, and then expect God to be gracious to the remnant of Joseph - to the posterity of the ten tribes.