The Bible, particularly the Psalms, uses highly poetic and figurative language to lift ordinary life to a lofty level of existence. Life with God is not boring and mundane but exhilarating and always interesting, and it touches on the eternal and spiritual.
The Word reveals (lifts the veil) the invisible spiritual world that surrounds and penetrates the visible physical world we see, so that we can walk by faith. That invisible world is filled with dangers and perils from death and disease, devils and demons, but it is also filled with angels and agents of God who are charged with protecting us from unseen ambush.
We do not need to know the details of what goes on in that world concerning our lives; we only need to know our Shepherd and our Fortress is in control. We only need to see enough to know that we can confidently place our selves and our lives under His shadow, His wings, and His shield, a more picturesque way of saying love, trust and pray to God. Then He personally promises to deliver, set on high, answer prayer, honor, satisfy with long life and show salvation. The truster lives securely.