"Another thing is that God has heard righteousness. When David said to Goliath, 'You come to me with a sword and a spear,' God heard righteousness. He listened to my cry when I fled from Saul and hid in the cave. He heard my prayer when I was afraid of Abner. I did not speak deceitfully with my lips. As it is written, 'And the Ziphites came up to Saul.'"...
Another thing is the prayer of David. When a person wakes up from sleep, they pray and say "Blessed is He who revives the dead." "God hears righteousness" (Psalm 17:1) refers to the recitation of the Shema. "Listen to my prayer" (Psalm 61:2) refers to prayer. "Attend to my cry" (Psalm 119:169) refers to the joy of Torah. "Without deceitful lips" refers to the Musaf prayer. Why "without deceitful lips"? Because we do not stand in prayer with empty words or deceitful speech, but with words of Torah and good deeds. Therefore, "judgment goes forth from you" (Isaiah 51:5) - that is, it goes forth and vindicates us....