Silver tongue is an expression used to describe a person who has a clever way with words. The phrase is mentioned in Proverbs 10:20 as a tongue that belongs to a just person (one who is upright in word and deed).

Silver Tongue
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Silver Tongue Language Services
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The Corpse with the Silver Tongue
Silver Tongue Award and Bushrod Moot Court Finals 2011
Silver Tongue Media releases Underground Xpress to the...
The Corpse with the Silver Tongue: A Cait Morgan Mystery
三寸之舌贏天下 : Silver tongue wins everything : 做人做事必備的技能
BOOK REVIEW. William Boyd: Silver Tongue and Golden Pen. Ian Carr. Fitzhenry & Whiteside and Associated Medical Services Incorporate...