'Gain' in the Bible

All her idols shall be broken in pieces,All her earnings [from her idolatry] shall be burned with fire,And all her images I shall make desolate;For from the earnings of a prostitute she collected them,And to the earnings of a prostitute they shall return.

“Arise and thresh, O Daughter of Zion!For I will make your horn ironAnd I will make your hoofs bronze;That you may beat many peoples in pieces [trampling down your enemies],That you may devote to the Lord their unjust gain (pagan possessions)And their wealth to the Lord of all the earth.