Take the high road. If it's questionable, a choice between definitely right and maybe right, always choose what you know to be right. The high road is often more difficult and demands almost always greater faith; but it will never lead you into the deep sewer-waters of sin.
"...choose you this day whom ye will serve..." Joshua 24:15
Therefore to him that knoweth to do good, and doeth it not, to him it is sin. James 4:17