Misinterpretations often treat the verse as a prophecy guaranteeing universal salvation where all people will inevitably bless God, disregarding the Bible's teachings on judgment and unbelief; others reduce it to a legalistic mandate for constant audible verbal praise, ignoring that biblical worship involves the whole heart, life, and actions, or misconstrue 'all flesh' as excluding animals and creation in broader praise contexts, thus missing the poetic, declarative call to universal doxology.
Psalms 145:21
King James Version (1769)
21 My mouth shall speak the praise of the Lord: and let all flesh bless his holy name for ever and ever.
Psalm 145:21 expresses David's personal vow to praise the Lord with his mouth while proclaiming that all creation should bless God's holy name eternally, highlighting the boundless scope of worship owed to His perfect holiness and the psalm's theme of God's praiseworthy attributes like righteousness, mercy, and sovereignty, calling every being to unending adoration in response to His greatness.