The Popular Commentary by Paul E. Kretzmann - Proverbs 21:1
v. 1. The king's heart is In the hand of the Lord as the rivers of water, the thoughts and plans of the mightiest rulers, sovereign as they may seem, are like ditches and canals in which men lead water where they desire; He turneth it whithersoever He will; no matter what the mighty may fatuously ascribe to themselves in the way of absolute authority, there is One whose government directs even their actions in agreement with His will. read more
George Haydock's Catholic Bible Commentary - Proverbs 21:1
It. Though it be free, and may resist grace or embrace virtue, Isaias xlv. 22., Jeremias iii. 14., and vii. 3., and Josue xxiv. 23. (Calmet) --- Yet God knows how to turn the heart even of a king, so as to preserve his liberty, with the same ease as a gardener brings the streams of water to his plants. (Menochius) read more