But another, more triumphant thought springs up. A devout soul, full-charged with thankfulness based on faith in God's name and ways, cannot but be led by remembering man's brief life to think of God's eternal years. So, the key changes at ver. 17 from plaintive minors to jubilant notes. The psalmist pulls out all the stops of his organ, and rolls along his music in a great _crescendo_ to the close. The contrast of God's eternity with man's transitoriness is like the similar trend of thought in Psalms xc., cii. The extension of His loving-kindness to children's children, and its limitation to those who fear Him and keep His covenant in obedience, rest upon Exod. xx. 6, xxxiv. 7; Deut. vii. 9. That limitation has been laid down twice already (vv. 11-13). All men share in that loving-kindness, and receive the best gifts from it of which they are capable; but those who cling to God in loving reverence, and who are moved by that blissful "fear" which has no torment, to yield their wills to Him in inward submission and outward obedience, do enter into the inner recesses of that loving-kindness, and are replenished with good, of which others are incapable. If God's loving-kindness is "from everlasting to everlasting," will not His children share in it for as long? The psalm has no articulate doctrine of a future life; but is there not in that thought of an eternal outgoing of God's heart to its objects some (perhaps half-conscious) implication that these will continue to exist? May not the psalmist have felt that, though the flower of earthly life "passed in the passing of an hour," the root would be somehow transplanted to the higher "house of the Lord," and "flourish in the courts of our God," as long as His everlasting mercy poured its sunshine? We, at all events, know that His eternity is the pledge of ours. "Because I live, ye shall live also."