I don't know whether it has ever struck you, but this is one of the greatest Psalms of David and worth memorizing by heart.
Take just the first line. 'The Lord is my light and my salvation'. Why does David club light and salvation? Because first & foremost there has to be that inshining of light, the revelation of God, an inward illumination, often through the word of God. We children of God have come into the light, and the effect of light is deliverance. Deliverance from darkness. Suddenly we see, and in seeing our faith is strengthened; we praise God.
And the light is my salvation, because light primarily heals. When God's truth becomes something more than mere doctrine, but flashes with life, it takes hold of you. It is like opening the eyes of the blind. You've come into a new world. And revelation leads to faith, and faith dispels fear. You are bold as a lion.
The word unveiled empowers you. The word that focuses in a new way upon the LORD, the Lord Jesus Christ. We see Him in a new way. We begin to glimpse His glory. He is really and truly our salvation... at all times! Not only in the past, when He saved me from sin, Satan, death & hell. But He continues to save, continues to deliver. He is my ever-present Savior, in a continuing salvation, saving spirit & soul as a Living & Loving Redeemer.
[The intensity of this Psalm is amazing. A Psalm worth reflecting upon. I hope that at least 3 members of this Forum will comment on this Psalm. I'm sure it has been a blessing to thousands of Christians over the centuries.]