Charles H. Spurgeon on Psalms 126:5

They that sow in tears shall reap. We must take notice of the reapers: "They shall reap." Which they? They that did sow; they shall, and none but they shall. They shall; and good reason they should, because it was they that did sow. And though some that have sown in tears do complain of the lateness or thinness of the harvest, that they have not reaped in joy, as is here promised; know that some grounds are later than others, and in some years the harvest falleth later than in others, and that God, who is the Lord of the harvest, in his good time will ripen thy joy, and thou shalt reap it: and in the meantime, if we try it narrowly, we shall find the cause in ourselves, both of the lateness of our joy, because we were too late in sowing our tears; and of the thinness of our joy, because we did sow our tears too thin. And if after our sowing of tears we find no harvest of joy at all, we may be well assured that either our seed was not good, or else some of the mischances are come upon them, which came upon the seed that came to no good in the thirteenth of Matthew. —Walter Balcanqual, in "a Sermon preached at St. Marice Spittle," 1623.