But unto thee have I cried, O Lord - I have earnestly prayed; I have sought thy gracious interposition.
And in the morning - That is, each morning; every day. My first business in the morning shall be prayer.
Shall my prayer prevent thee - Anticipate thee; go before thee: that is, it shall be early; so to speak even before thou dost awake to the employments of the day. The language is that which would be applicable to a case where one made an appeal to another for aid before he had arisen from his bed, or who came to him even while he was asleep - and who thus, with an earnest petition, anticipated his rising. Compare the notes at Job 3:12; compare Psalms 21:3; Psalms 59:10; Psalms 79:8; Psalms 119:148; Matthew 17:25; 1 Thessalonians 4:15.