Koph.
19. cry … in … night—(Ps 119:147).
beginning of … watches—that is, the first of the three equal divisions (four hours each) into which the ancient Jews divided the night; namely, from sunset to ten o'clock. The second was called "the middle watch" (Jud 7:19), from ten till two o'clock. The third, "the morning watch," from two to sunrise (Ex 14:24; 1Sa 11:11). Afterwards, under the Romans, they had four watches (Mt 14:25; Lu 12:38).
for … thy … children—that God, if He will not spare thee, may at least preserve "thy young children."
top of … street—(Isa 51:20; Na 3:10).