Charles H. Spurgeon on Psalms 126:4

Turn again our captivity, O LORD. Remembering the former joy of a past rescue they cry to Jehovah for a repetition of it. When we pray for the turning of our captivity, it is wise to recall former instances thereof: nothing strengthens faith more effectually than the memory of a previous experience. "The Lord hath done" harmonizes well with the prayer, "Turn again." The text shows us how wise it is to resort anew to the Lord, who in former times has been so good to us. Where else should we go but to him who has done such great things for us? Who can turn again our captivity but he who turned it before? As the streams in the south. Even as the Lord sends floods down on the dry beds of southern torrents after long droughts, so can he fill our wasted and wearied spirits with floods of holy delight. This the Lord can do for any of us, and he can do it at once, for nothing is too hard for the Lord. It is well for us thus to pray, and to bring our suit before him who is able to bless us exceeding abundantly. Do not let us forget the past, but in the presence of our present difficulty let us resort unto the Lord, and beseech him to do that for us which we cannot possibly do for ourselves, —that which no other power can perform on our behalf. Israel did return from the captivity in Babylon, and it was even as though a flood of people hastened to Zion. Suddenly and plenteously the people filled again the temple courts. In streams they shall also in the latter days return to their own land, and replenish it yet again. Like mighty torrents shall the nations flow unto the Lord in the day of his grace. May the Lord hasten it in his own time.