3. Put not your faith in princes, nor in the son of man, in whom there is no help
4. His breath goes forth, he returns to dust; in that very day his thoughts perish
5. Happy is the man who is help is the G-d of Jacob, whose hope is in the L-rd his G-d.
Jesus is referred to as "son of man" in many places in the Christian bible. Yet the Book of Psalms teaches us not to put our trust in the "son of man."
Ultimately, the Jewish people must put their trust in G-d. And the Bible is clear, G-d is not a man. For instance, Hoshea 11: 9 says:
I will not execute the fierceness of My anger, I will not return to destroy Ephraim; for I am G-d, and not man, the Holy One in the midst of thee; and I will not come in fury.