Our psalm goes on with words which contain a further allusion to another part of the same venerable hymn, "And in the shadow of Thy wings will I take refuge," which remind us of the grand image in it of God's care over Israel, as of the eagle bearing her eaglets on her mighty pinions (ver. 11), and point onwards to the still more wonderful saying in which all that was terrible and stern in the older figure is softened into tenderness, and instead of the fierce affection of the mother eagle, the hen gathering her chickens under her wings becomes the type of the brooding love and more than maternal solicitude of God in Christ. Nor can we forget that the only other instance of the figure before David's psalms is in the exquisite idyl which tells of the sweet heroism of David's ancestress, Ruth, on whose gentle and homeless head was pronounced the benediction, "A full reward be given thee of the Lord God of Israel, under whose wings thou art come to trust" (Ruth ii. 12). We may perhaps also see in this clause an extension of the simile which unquestionably lies in the verb, and may think of the strong "sides of the cave," arching above the fugitive like a gigantic pair of wings beneath which he nestles warm and dry, while the short-lived storm roars among the rocks--a type of that broad pinion which is his true defence till threatening evils be overpast. In the past he has sheltered his soul in God, but no past act of faith can avail for present distresses. It must be perpetually renewed. The past deliverances should make the present confidence more easy; and the true use of all earlier exercises of trust is to prepare for the resolve that we will still rely on the help we have so often proved. "I have trusted in Thee" should ever be followed by "And in the shadow of Thy wings will I trust."