Passage
Thou shalt walke vpon the lyon and aspe: the yong lyon and the dragon shalt thou treade vnder feete.
Thou shalt walke vpon the lyon and aspe: the yong lyon and the dragon shalt thou treade vnder feete.
Psalms 91:11 For hee shall giue his Angels charge ouer thee to keepe thee in all thy wayes.
Psalms 91:12 They shall beare thee in their handes, that thou hurt not thy foote against a stone.
Psalms 91:13 Thou shalt walke vpon the lyon and aspe: the yong lyon and the dragon shalt thou treade vnder feete.
Psalms 91:14 Because he hath loued me, therefore will I deliuer him: I will exalt him because hee hath knowen my Name.
Psalms 91:15 He shall call vpon me, and I wil heare him: I will be with him in trouble: I will deliuer him, and glorifie him.
The verse centers on "thou", "shalt", "walke", "vpon", "lyon", "aspe", and "yong". It is saying that the verse draws attention to "thou" and "shalt", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 12's "They shall beare thee in their handes..." into verse 14's "Because he hath loued me therefore will...", so "thou" and "shalt" belong inside that flow. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "thou" and "shalt" with trust shaped by these words, not by a vague optimism outside the passage.