Charles H. Spurgeon on Psalms 122:6

They shall prosper that love thee. Seeing they prosper that love and bear affection to Jerusalem, let men learn to show good will unto Christ's church, though as yet they be no ripe scholars themselves in Christ's school: though they be not grown to perfection let them express a good affection. A good will and inclination, where strength yet faileth, is accepted, and a ready disposition is not rejected: though thou be not yet of the saints, yet love the saints. If thou likest and lovest that thou wouldst be, thou must be that hereafter which yet thou art not. The little bird before she flieth fluttereth with her wings in the nest: the child creepeth before he goeth: so religion begins with affection, and devotion proceedeth from desire. A man must first love that he would be, before he can be that which he loveth. It is a good sign when a man affecteth that which he expects, and doth favour that which he would more fully favour. He that loveth Sion shall prosper: he that loveth virtue shall increase and prosper in it. The day of small things shall not be despised (Zec 4:10), neither shall the smoking flax be quenched (Mt 12:20); but the smoke shall bring forth fire, and fire shall break forth into a flame. Andrew Willett (1562-1621), in "Certaine Fruitfull Meditations upon the 122. Psalme."