المزامير ٧٨:٤٩

When these plagues rose to the highest pitch, Israel became free, and removed, being led by its God, into the Land of Promise; but it continued still to behave there just as it had done in the desert. The poet in Psa 78:49-51 brings the fifth Egyptian plague, the pestilence (Exo 9:1-7), and the tenth and last, the smiting of the first-born (מכּת בּכרות), Exo 11:1, together. Psa 78:49 sounds like Job 20:23 (cf. below Psa 78:64). מלאכי רעים are not wicked angels, against which view Hengstenberg refers to the scriptural thesis of Jacobus Ode in his work De Angelis, Deum ad puniendos malos homines mittere bonos angelos et ad castigandos pios usurpare malos, but angels that bring misfortune. The mode of construction belongs to the chapter of the genitival subordination of the adjective to the substantive, like אשׁת רע, Pro 6:24, cf. Sa1 28:7; Num 5:18, Num 5:24; Kg1 10:15; Jer 24:2, and the Arabic msjdu 'l-jâm‛, the mosque of the assembling one, i.e., the assembling (congregational) mosque, therefore: angels (not of the wicked ones = wicked angels, which it might signify elsewhere, but) of the evil ones = evil, misfortune-bringing angels (Ew. ֗287, a). The poet thus paraphrases the המּשׁחית that is collectively conceived in Exo 12:13, Exo 12:23; Heb 11:28. In Psa 78:50 the anger is conceived of as a stream of fire, in Psa 78:50 death as an executioner, and in 50c the pestilence as a foe. ראשׁית אונים (Gen 49:3; Deu 21:17) is that which had sprung for the first time from manly vigour (plur. intensivus). Egypt is called חם as in Ps 105 and Psa 111:1-10 according to Gen 10:6, and is also called by themselves in ancient Egyptian Kemi, Coptic Chmi, Kme (vid., Plutarch, De Iside et Osiride, ch. 33). When now these plagues which softened their Pharaoh went forth upon the Egyptians…

This psalm is historical; it is a narrative of the great mercies God had bestowed upon Israel, the great sins wherewith they had provoked him, and the many tokens of his displeasure they had been under for their sins. The psalmist began, in the foregoing psalm, to relate God's wonders of old, for his own encouragement in a difficult time; there he broke off abruptly, but here resumes the subject, for the edification of the church, and enlarges much upon it, showing not only how good God had been to them, which was an earnest of further finishing mercy, but how basely they had conducted themselves towards God, which justified him in correcting them as he did at this time, and forbade all complaints. Here is, I. The preface to this church history, commanding the attention of the present age to it and recommending it to the study of the generations to come (Psa 78:1-8). II. The history itself from Moses to David; it is put into a psalm or song that it might be the better remembered and transmitted to posterity, and that the singing of it might affect them with the things here related, more than they would be with a bare narrative of them. The general scope of this psalm we have (Psa 78:9-11) where notice is taken of the present rebukes they were under (Psa 78:9), the sin which brought them under those rebukes (Psa 78:10), and the mercies of God to them formerly, which aggravated that sin (Psa 78:11). As to the particulars, we are here told, 1. What wonderful works God had wrought for them in bringing them out of Egypt (Psa 78:12-16), providing for them in the wilderness (Psa 78:23-29), plaguing and ruining their enemies (Psa 78:43-53), and at length putting them in possession of the land of promise (Psa 78:54, Psa 78:55). 2. How ungrateful they were to God for his favours…