A very strong and graphic expression, founded upon the familiar Hebrew representation of the relation of God's people to him under the figure of marriage. See Psa 73:27; Isa 57:3 sqq.; Isa 62:5; Eze 23:27. Hence idolatry and intercourse with Gentiles were described as adultery; and so here, of moral unfaithfulness to God. Compare Jam 4:4 :; Rev 2:20 sqq. Thus Dante: