Introduction:
Psalm 91 is a cherished passage within the Book of Psalms, often referred to as the "Psalm of Protection." It is a profound expression of trust in God's providence and a declaration of His ability to safeguard His faithful from harm. This psalm is traditionally attributed to Moses, though some scholars suggest Davidic authorship. It is a part of the fourth book of the Psalms, which spans from Psalm 90 to Psalm 106.

Structure and Themes:
Psalm 91 is composed of 16 verses and can be divided into several thematic sections:

1. Verses 1-2: The Assurance of God's Protection
· The psalm opens with a declaration of trust in God as a refuge and fortress. The psalmist states, "He who dwells in the shelter of the Most High will abide in the shadow of the Almighty. I will say of the LORD, 'He is my refuge and my fortress, my God, in whom I trust.'" (Psalm 91:1-2). This sets the tone for the entire psalm, emphasizing the security found in God's presence.

2. Verses 3-8: Deliverance from Peril
· These verses describe various dangers from which God delivers His people, including snares, deadly pestilence, and terror by night. The imagery of God covering His faithful with His feathers and providing refuge under His wings is particularly evocative. The psalmist assures that those who trust in God will not fear the "arrow that flies by day" or the "pestilence that stalks in darkness" (Psalm 91:5-6).

3. Verses 9-13: The Promise of Angelic Protection
· The psalmist reiterates the safety found in making the Lord one's dwelling place. A notable promise is the charge given to angels to guard the faithful: "For He will command His angels concerning you to guard you in all your ways" (Psalm 91:11). This section highlights the divine protection that extends even to the point of treading upon lions and serpents.

4. Verses 14-16: God's Assurance of Deliverance
· The final verses are a divine oracle, where God Himself speaks, promising deliverance, protection, and salvation to those who love Him and acknowledge His name. The Lord declares, "Because he loves Me, I will deliver him; because he knows My name, I will protect him" (Psalm 91:14). This personal assurance from God underscores the intimate relationship between the believer and the Divine.

Theological Significance:
Psalm 91 is often interpreted as a testament to God's omnipotence and faithfulness. It reflects the belief that God is actively involved in the lives of His people, providing protection and deliverance from both physical and spiritual dangers. The psalm is frequently invoked in times of distress, illness, or danger, serving as a source of comfort and hope.

Use in Worship and Tradition:
Throughout history, Psalm 91 has been used in various liturgical settings and personal devotions. It is recited in Jewish, Christian, and other religious traditions as a prayer for protection. In Christian liturgy, it is often read during times of crisis or as part of the Compline service, which is the final church service of the day.

Interpretation in the New Testament:
Psalm 91 is referenced in the New Testament, notably during the temptation of Jesus in the wilderness. Satan quotes verses 11-12 to challenge Jesus to throw Himself down from the pinnacle of the temple, suggesting that angels would protect Him. Jesus responds by quoting Deuteronomy 6:16, emphasizing the importance of not testing God (Matthew 4:5-7).

Conclusion:
Psalm 91 remains a powerful affirmation of faith in God's protective power. Its vivid imagery and promises of divine care continue to resonate with believers, offering reassurance and strength in the face of life's uncertainties.