ASV: To the pure all things are pure: but to them that are defiled and unbelieving nothing is pure; but both their mind and their conscience are defiled.

BBE: To the clean in heart all things are clean: but to those who are unclean and without faith nothing is clean; they become unclean in mind and in thought.

DBY: All things are pure to the pure; but to the defiled and unbelieving nothing is pure; but both their mind and their conscience are defiled.

KJV: Unto the pure all things are pure: but unto them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled.

WEY: To the pure everything is pure; but to the polluted and unbelieving nothing is pure, but on the contrary their very minds and consciences are polluted.

WBS: To the pure all things are pure: but to them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled.

WEB: To the pure, all things are pure; but to those who are defiled and unbelieving, nothing is pure; but both their mind and their conscience are defiled.

YLT: all things, indeed, 'are' pure to the pure, and to the defiled and unstedfast 'is' nothing pure, but of them defiled 'are' even the mind and the conscience;
