Who satisfieth thy mouth with good things, or rather "filling with good thy soul." No man is ever filled to satisfaction but a believer, and only God himself can satisfy even him. Many a worldling is satiated, but not one is satisfied. God satisfies the very soul of man, his noblest part, his ornament and glory; and of consequence he satisfies his mouth, however hungry and craving it might otherwise be. Soul-satisfaction loudly calls for soul-praise, and when the mouth is filled with good it is bound to speak good of him who filled it. Our good Lord bestows really good things, not vain toys and idle pleasures; and these he is always giving, so that from moment to moment he is satisfying our soul with good: shall we not be still praising him? If we never cease to bless him till he ceases to bless us, our employment will be eternal. So that thy youth is renewed like the eagle's. Renewal of strength, amounting to a grant of a new lease of life, was granted to the Psalmist; he was so restored to his former self that he grew young again, and looked as vigorous as an eagle, whose eye can gaze upon the sun, and whose wing can mount above the storm. Our version refers to the annual moulting of the eagle, after which it looks fresh and young; but the original does not appear to allude to any such fact of natural history, but simply to describe the diseased one as so healed and strengthened, that he became as full of energy as the bird which is strongest of the feathered race, most fearless, most majestic, and most soaring. He who sat moping with the owl in the last Psalm, here flies on high with the eagle: the Lord works marvellous changes in us, and we learn by such experiences to bless his holy name. To grow from a sparrow to an eagle, and leave the wilderness of the pelican to mount among the stars is enough to make any man cry, "Bless the Lord, O my soul." Thus, is the endless chain of grace complete. Sins forgiven, its power subdued, and its penalty averted, then we are honoured, supplied, and our very nature renovated, till we are as new-born children in the household of God. O Lord we must bless thee, and we will; as thou dost withhold nothing from us so we would not keep back from thy praise one solitary power of our nature, but with all our heart, and soul, and strength praise thy holy name.