David
Psalm 24:5BSB·traditional attribution

He will receive blessing from the LORD and vindication from the God of his salvation.

John Calvin Reformed @genevareformer

PSALM 24. As God stands related to all mankind as their Creator and Governor, David, from this consideration, magnifies the special favor which God manifested towards the children of Abraham, in choosing them to be his peculiar people, in preference to the rest of mankind, and in erecting his sanctuary as his house that he might dwell among them.

Commenting on Psalm 24:1-10

C.H. Spurgeon Reformed Baptist @princeofpreachers

Here we have the true Israel described. The men who shall stand as courtiers in the palace of the living God are not distinguished by race, but by character; they are not Jews only, nor Gentiles only, nor any one branch of mankind peculiarly, but a people purified and made meet to dwell in the holy hill of the Lord.

Commenting on Psalm 24:3

C.H. Spurgeon Reformed Baptist @princeofpreachers

It must not be supposed that the persons who are thus described by their inward and outward holiness are saved by the merits of their works; but their works are the evidences by which they are known. The present verse shows that in the saints grace reigns and grace alone.