'Showing Mercy' in the Bible

For thy great and manifold saving of thy king, and showing mercy unto thine anointed, even to David, and his seed forever.

Great prosperity giveth he unto his king, and showeth loving-kindness unto David his anointed, and unto his seed for evermore. {TYNDALE: For thy great and manifold saving of thy king, and showing mercy unto thine anointed, even to David, and his seed forever.}