I think it is important to read the entire chapter in order to understand what Psalm 146:4 means.
Verse 4 is not referring to
our thoughts, it is referring to
his thoughts.
Verse 4 says
in that very day his thoughts perish. His is referring verse 3. His = princes, the son of man, in whom there is no help.
Thoughts of any man about what we should do will perish, so we are not to put our trust or hope in any man, we are only to put our trust and hope in the Lord God.
Psalm 146
21st Century King James Version
146 Praise ye the Lord. Praise the Lord, O my soul.
2 While I live will I praise the Lord: I will sing praises unto my God while I have any being.
3 Put not your trust in princes, nor in the son of man, in whom there is no help.
4 His breath goeth forth, he returneth to his earth; in that very day his thoughts perish.
5 Happy is he that hath the God of Jacob for his help, whose hope is in the Lord his God:
6 Which made heaven, and earth, the sea, and all that therein is: which keepeth truth for ever:
7 Which executeth judgment for the oppressed: which giveth food to the hungry. The Lord looseth the prisoners:
8 The Lord openeth the eyes of the blind: the Lord raiseth them that are bowed down: the Lord loveth the righteous:
9 The Lord preserveth the strangers; he relieveth the fatherless and widow: but the way of the wicked he turneth upside down.
10 The Lord shall reign for ever, even thy God, O Zion, unto all generations. Praise ye the Lord.
Psalms 146:3 meaning
Trusting human leaders can prove to be a misguided endeavor, as even the mightiest among us are frail and ultimately subject to death. The psalmist reminds us of the futility in relying on "princes" or "the son of man," emphasizing that they lack the ability to provide true help or salvation. This warning is crucial for believers, as mortal beings are temporary, their thoughts and plans cease to exist upon death, reinforcing the necessity of placing our hope in the eternal God. This resonates with the notion that our ultimate trust should not revolve around transient human rulers, but rather the everlasting Lord who possesses the power and promise of salvation.
In the context of Psalms 146:3, the psalmist urges the faithful to redirect their confidence from fallible people to the Creator, who has established the heavens and the earth. Such a shift underscores a foundational theme of faith: champions may fall, but God remains steadfast and unwavering. Therefore, the challenge remains clear: do not place your trust in the transitory, but anchor your faith in the everlasting truth of God's promises.
An explanation of Psalms 146:3
thebiblesays.com