John Calvin's Commentary on the Bible - Psalms 27:1
Verse 1 1.Jehovah is my light. This commencement may be understood as meaning that David, having already experienced God’s mercy, publishes a testimony of his gratitude. But I rather incline to another meaning, namely, that, perceiving the conflict he had to wage with the sharpest temptations, he fortifies himself beforehand, and as it were brings together matter for confidence: for it is necessary that the saints earnestly wrestle with themselves to repel or subdue the doubts which the flesh... read more
Adam Clarke's Commentary on the Bible - Psalms 27:5
He shall hide me in his pavilion - בסכה besuccoh , in his tabernacle. I would make his temple my residence; I would dwell with God, and be in continual safety. Pavilion comes from papilio and παπιλιων , a butterfly. It signifies a tent made of cloth stretched out on poles, which in form resembles in some measure the insect above named. In the secret of his tabernacle - Were there no other place, he would put me in the holy of holies, so that an enemy would not dare to approach me. ... read more