Only with thine {f} eyes shalt thou behold and see the reward of the wicked.

(f) The godly will have some experience of God's judgements against the wicked even in this life, but they will see it fully at that day when all things will be revealed.

Matthew Henry's Concise Commentary

91:1-8 He that by faith chooses God for his protector, shall find all in him that he needs or can desire. And those who have found the comfort of making the Lord their refuge, cannot but desire that others may do so. The spiritual life is protected by Divine grace from the temptations of Satan, which are as the snares of the fowler, and from the contagion of sin, which is a noisome pestilence. Great security is promised to believers in the midst of danger. Wisdom shall keep them from being afraid without cause, and faith shall keep them from being unduly afraid. Whatever is done, our heavenly Father's will is done; and we have no reason to fear. God's people shall see, not only God's promises fulfilled, but his threatenings. Then let sinners come unto the Lord upon his mercy-seat, through the Redeemer's name; and encourage others to trust in him also.