I. A prayer that God would, in his providence, appear and act for the deliverance of his people and the mortification of his and their enemies. Awake, awake! put on strength, O arm of the Lord! v. 9. The arm of the Lord is Christ, or it is put for God himself, as Ps. xliv. 23. Awake! why sleepest thou? He that keeps Israel neither slumbers nor sleeps; but, when we pray that he would awake, we mean that he would make it to appear that he watches over his people and is always awake to do them good. The arm of the Lord is said to awake when the power of God exerts itself with more than ordinary vigour on his people's behalf. When a hand or arm is benumbed we say, It is asleep; when it is stretched forth for action, It awakes. God needs not to be reminded nor excited by us, but he gives us leave thus to be humbly earnest with him for such appearances of his power as will be for his own praise. "Put on strength," that is, "put forth strength: appear in thy strength, as we appear in the clothes we put on," Ps. xxi. 13. The church sees her case bad, her enemies many and mighty, her friends few and feeble; and therefore she depends purely upon the strength of God's arm for her relief. "Awake, as in the ancient days," that is, "do for us now as thou didst for our fathers formerly, repeat the wonders they told us of," Judg. vi. 13.