Luke 6:35. But love ye your enemies, and do good, and lend, hoping for nothing again; and your reward shall be great, and ye shall be the children of the Highest: for he is kind unto the unthankful and to the evil.
2 Timothy 3:2. For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy,
Wisdom of Solomon 16:29. For the hope of the unthankful shall melt away as the winter's ice, and shall run off as unprofitable water.
Sirach 29:16. Better than the shield of the mighty, and better than the spear:
Sirach 29:25. A sinner that transgresseth the commandment of the Lord, shall fall into an evil suretyship: and he that undertaketh many things, shall fall into judgment.
