'Keen' in the Bible

The Lord is my rock, my fortress, and the One who rescues me;My God, my rock and strength in whom I trust and take refuge;My shield, and the horn of my salvation, my high tower—my stronghold.

Blessed be the Lord, my Rock and my great strength,Who trains my hands for warAnd my fingers for battle;

Keen insight wins favor, but the conduct of the unfaithful is harsh.

young men in whom there was no physical defect and who were handsome, well versed in all kinds of wisdom, well educated and having keen insight, and who were capable of entering the king's royal service -- and to teach them the literature and language of the Babylonians.

who was a friend of the Proconsul Sergius Paulus. The Proconsul was a man of keen intelligence. He sent for Barnabas and Saul, and asked to be told God's Message.

For Titus not only accepted our appeal, but was so very interested in you that he has gone to visit you of his own accord.

And this I pray, that your love may abound more and more [displaying itself in greater depth] in real knowledge and in practical insight,