'Keener' in the Bible

“Their horses are swifter than leopardsAnd keener than wolves in the evening.Their horsemen come galloping,Their horsemen come from afar;They fly like an eagle swooping down to devour.

For God's Message is full of life and power, and is keener than the sharpest two-edged sword. It pierces even to the severance of soul from spirit, and penetrates between the joints and the marrow, and it can discern the secret thoughts and purposes of the heart.