A Commentary, Critical, Practical, and Explanatory on the Old and New Testaments, by Robert Jamieson, A.R. Fausset and David Brown  at sacred-texts.com
psa 59:1See on Psa 57:1, title, and for history, Sa1 19:11, &c. The scope is very similar to that of the fifty-seventh: prayer in view of malicious and violent foes, and joy in prospect of relief. (Psa. 59:1-17)
defend me--(Compare Margin).
rise up . . . me--(Compare Psa 17:7).
psa 59:2(Compare Psa 5:5; Psa 6:8).
psa 59:4prepare, &c.--literally, "set themselves as in array."
awake--(Compare Psa 3:7; Psa 7:6), appeals to God in His covenant relation to His people (Psa 9:18).
psa 59:6They are as ravening dogs seeking prey, and as such,
belch out--that is, slanders, their impudent barkings.
psa 59:7for who, say they--For the full expression with the supplied words, compare Psa 64:5.
psa 59:8(Compare Psa 2:4; Psa 37:13).
psa 59:9By judicious expositors, and on good grounds, this is better rendered, "O my strength, on Thee will I wait" (Psa 59:17).
defence--(Compare Psa 18:3).
psa 59:10prevent me-- (Psa 21:3).
see my desire--in their overthrow (Psa 54:7).
enemies--as in Psa 5:8.
psa 59:11Slay them not--at once (Jdg 2:21-23); but perpetuate their punishment (Gen 4:12; Num 32:13), by scattering or making them wander, and humble them.
psa 59:12let them even be . . . taken in their pride--while evincing it--that is, to be punished for their lies, &c.
psa 59:13Though delayed for wise reasons, the utter destruction of the wicked must come at last, and God's presence and power in and for His Church will be known abroad (Sa1 17:46; Psa 46:10-11).
psa 59:14Meanwhile let the rapacious dogs prowl, they cannot hurt the pious; yea, they shall wander famished and sleepless.
psa 59:15grudge if, &c.--literally, "they shall stay all night," that is, obtain nothing.
psa 59:16Contrast the lot of God's servant, who employs his time in God's praise.
sing aloud . . . in the morning--when they retire famishing and disappointed, or it may denote delightful diligence in praise, as in Psa 30:5.