Adam Clarke on Psalms 65:4

Blessed is the man whom thou choosest - This is spoken in reference to the priests who were chosen of God to minister at the tabernacle; and who were permitted to approach, draw nigh, to the Divine Majesty by the various offerings and sacrifices which they presented.

We shall be satisfied with the goodness of thy house - Though we are not priests, and have not the great felicity to minister before thee in holy things; yet we can worship at thy temple, feel the outpouring of thy Spirit, and be made happy with the blessings which thou dispensest there to thy true worshippers.