Contradiction with Proverbs 20:29
The verse implies strength and glory are found in youth, contrasting with Psalms 71:18's focus on proclaiming God's power as an elder.
Proverbs 20:29: The glory of young men [is] their strength: and the beauty of old men [is] the gray head.
Contradiction with Ecclesiastes 11:9
It encourages enjoying youth without concern, differing from Psalms 71:18's eagerness to engage in purposeful tasks in old age.
Ecclesiastes 11:9: Rejoice, O young man, in thy youth; and let thy heart cheer thee in the days of thy youth, and walk in the ways of thine heart, and in the sight of thine eyes: but know thou, that for all these [things] God will bring thee into judgment.
Contradiction with Lamentations 5:14
This verse mentions how the elders have ceased from the gate, which can contrast with Psalms 71:18's desire for the elderly to proclaim God's strength.
Lamentations 5:14: The elders have ceased from the gate, the young men from their musick.
Contradiction with Job 12:12
The verse suggests wisdom comes with age, contrasting with the idea in Psalms 71:18 of continuing purpose in sharing God's might.
Job 12:12: With the ancient [is] wisdom; and in length of days understanding.
Contradiction with Isaiah 40:30
It states even youths will grow weary, which opposes Psalms 71:18's highlighting of energetic proclamation by the elderly.
Isaiah 40:30: Even the youths shall faint and be weary, and the young men shall utterly fall: