Psalms 3:7
7. Arise, O Lord—God is figuratively represented as asleep to denote His apparent indifference (Ps 7:6). The use of "cheekbone" and "teeth" represents his enemies as fierce, like wild beasts ready to devour (Ps 27:2), and smiting their cheekbone (1Ki 22:24) denotes violence and insult.
thou hast broken—God took his part, utterly depriving the enemy of power to injure.Psalms 22:24
22-24. He declares his purpose to celebrate God's gracious dealings and publish His manifested perfections ("name," Ps 5:11), &c., and forthwith he invites the pious (those who have a reverential fear of God) to unite in special praise for a deliverance, illustrating God's kind regard for the lowly, whom men neglect [Ps 22:24]. To hide the face (or eyes) expresses a studied neglect of one's cause, and refusal of aid or sympathy (compare Ps 30:7; Isa 1:15).
Psalms 27:9
9. Hide not, &c.— (Ps 4:6; 22:24). Against rejection he pleads former mercy and love.