II. The pleas to enforce this prayer. 1. They plead precedents, the experiences of their ancestors, and the great things God had done for them. "Let the arm of the Lord be made bare on our behalf; for it has done great things formerly in defence of the same cause, and we are sure it is neither shortened nor weakened. It did wonders against the Egyptians, who enslaved and oppressed God's son, his first-born; it cut Rahab to pieces with one direful plague after another, and wounded Pharaoh, the dragon, the Leviathan (as he is called, Ps. lxxiv. 13, 14); it gave him his death's wound. It did wonders for Israel. It dried up the sea, even the waters of the great deep, as far as was requisite to open a way through the sea for the ransomed to pass over," v. 10. God is never at a loss for a way to accomplish his purposes concerning his people, but will either find one or make one. Past experiences, as they are great supports to faith and hope, so they are good pleas in prayer. Thou hast; wilt thou not? Ps. lxxxv. 1-6. 2. They plead promises (v. 11): And the redeemed of the Lord shall return, that is (as it may be supplied), thou hast said, They shall, referring to ch. xxxv. 10, where we find this promise, that the redeemed of the Lord, when they are released out of their captivity in Babylon, shall come with singing unto Zion. Sinners, when they are brought out of the slavery of sin into the glorious liberty of God's children, may come singing, as a bird got loose out of the cage. The souls of believers, when they are delivered out of the prison of the body, come to the heavenly Zion with singing. Then this promise will have its full accomplishment, and we may plead it in the mean time. He that designs such joy for us at last will he not work such deliverances for us in the mean time as our case requires? When the saints come to heaven they enter into the joy of their Lord; it crowns their heads with immortal honour; it fills their hearts with complete satisfaction. They shall obtain that joy and gladness which they could never obtain in this vale of tears. In this world of changes it is a short step from joy to sorrow, but in that world sorrow and mourning shall flee away, never to return or come in view again.