Albert Barnes Commentary Ezra 9:11

"which thou hast commanded by thy servants the prophets, saying, The land, unto which ye go to possess it, is an unclean land through the uncleanness of the peoples of the lands, through their abominations, which have filled it from one end to another with their filthiness:" — Ezra 9:11 (ASV)

Saying - The words which follow in this verse are not quoted from any previous book of Scripture, but merely give the general sense of numerous passages. Compare the marginal references.