Charles H. Spurgeon on Psalms 27:5

This verse gives an excellent reason for the psalmist's desire after communion with God, namely, that he was thus secured in the hour of peril. For in the time of trouble, that needy time, that time when others forsake me, he shall hide me in his pavilion: he shall give me the best of shelter in the worst of danger. The royal pavilion was erected in the centre of the army, and around it all the mighty men kept guard at all hours; thus in that divine sovereignty which almighty power is sworn to maintain, the believer peacefully is hidden, hidden not by himself furtively, but by the king, who hospitably entertains him. In the secret of his tabernacle shall he hide me. Sacrifice aids sovereignty in screening the elect from harm. No one of old dared to enter the most holy place on pain of death; and if the Lord has hidden his people there, what foe shall venture to molest them? He shall set me up upon a rock. Immutability, eternity, and infinite power here come to the aid of sovereignty and sacrifice. How blessed is the standing of the man whom God himself sets on high above his foes, upon an impregnable rock which never can be stormed! Well may we desire to dwell with the Lord who so effectually protects his people.