Adam Clarke's Commentary on the Bible - Psalms 18:20
The Lord rewarded me - David proceeds to give the reasons why God had so marvellously interposed in his behalf. According to my righteousness - Instead of being an enemy to Saul, I was his friend. I dealt righteously with him while he dealt unrighteously with me. read more
Adam Clarke's Commentary on the Bible - Psalms 18:19
He brought me forth also into a large place - He enabled me to clear the country of my foes, who had before cooped me up in holes and corners. This appears to be the allusion. read more