To them that are defiled (τοις μεμιαμμενοις). Perfect passive articular participle of μιαινω, old verb, to dye with another colour, to stain, in N.T. only here, Judges 1:8; Hebrews 12:15. See μεμιαντα (perf. pass. indic.) in this verse. Μολυνω (1. Corinthians 8:7) is to smear.

Unbelieving (απιστοις). As in 1. Corinthians 7:12; 1. Timothy 5:8. The principle or proverb just quoted appears also in 1. Corinthians 6:12; 1. Corinthians 10:23; Romans 14:20. For the defilement of mind (νους) and conscience (συνειδησις) in both Gentile and Jew by sin, see Romans 1:18-2.