אַל־תִּבְטְח֥וּ בִנְדִיבִ֑ים בְּבֶן־אָדָ֓ם ׀ שֶׁ֤אֵֽין ל֥וֹ תְשׁוּעָֽה׃
Janganlah kamu percaya kepada para pembesar, kepada manusia yang tidak sanggup memberi pertolongan.
Radak
אל תבטחו. "Do not trust":, as Jeremiah said, "and from them their heart departs" (Jeremiah 17:5). If one trusts in a person, they should place the primary trust in God, who puts it in the heart of the generous person to help. The idea is repeated with different words: "in whom there is no help," meaning that if it is not God's will, a person cannot save his fellow from distress. For salvation belongs to God alone, and He brings it about through people, just as He brought about the salvation from the Babylonian exile through Cyrus. Similarly, in the future, He will bring about the redemption of Israel through the kings of the nations, stirring their spirits to send them, as it is written, "And they shall bring all your brethren out of all the nations for an offering unto the Lord" (Isaiah 66:20). This will happen because Israel trusted in God alone during their exile.
Ibn Ezra
"Do not" - There are those who say [that the psalmist is speaking] about a human being [in the sense that he is one] who does not have a true salvation [by which] to save you. What seems right in my eyes is [that the psalmist is speaking] about a human being [in the sense that] he is unable to save himself.