Psalm 8 and reference to the Son of Man

 Ps. 8

1. LORD, our Lord, in all the earth   How excellent Your name!
You above the heav'ens have set   The splendor of Your fame.
2. From the mouths of infants young   You the power of praise compose
In the face of enemies   To stop avenging foes.

3. When I view the skies above  Which Your own fingers made,
When I see the moon and stars  Which You in order laid,
4. What is man so frail and weak  That You should remember him?
What can be the son of man  That You should care for him?

5. Next to God You have made man,  With light and honor crowned.
6. You placed him above Your works;  Beneath him all is found:
7. Oxen, sheep, and all wild beasts, 8. Birds, and fish the oceans claim.
9. LORD, our Lord, in all the earth  How excellent Your name!

    

When the Psalm mentions son of man think of it in light of the ultimate Son of Man

Hebrews 2

5 Now it was not to angels that God subjected the world to come, of which we are speaking. 6 It has been testified somewhere,

“What is man, that you are mindful of him,
or the son of man, that you care for him?
7 You made him for a little while lower than the angels;
you have crowned him with glory and honor, 
8 putting everything in subjection under his feet.” [Psalm 8]

Now in putting everything in subjection to him, he left nothing outside his control. At present, we do not yet see everything in subjection to him. 9 But we see him who for a little while was made lower than the angels, namely Jesus, crowned with glory and honor because of the suffering of death, so that by the grace of God he might taste death for everyone.