'Skilful' in the Bible
And I will pour out my indignation upon thee; I will blow against thee in the fire of my wrath and deliver thee into the hand of fearful men who are skilful to destroy.
Therefore the LORD, the God of the hosts, the Lord, said this: Wailing shall be in all streets, and they shall say in all the highways, Alas! alas! and they shall call the husbandman to mourning and such as are skilful of lamentation to wailing.