'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;

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,