Psalm 121 (Greek numbering: Psalm 120) is the 121st psalm from the Book of Psalms. It is one of 15 psalms categorized as "A song of ascents" (Shir Hama'alot), although unlike the others, it begins, Shir LaMa'alot ("A song to the ascents").
As a song of ascent it is recognized that this psalm was sung by pilgrims on their way to Jerusalem. At the beginning of the pilgrimage, in the mountainous region of the Judean Hills, the pilgrim makes sure the Lord's help. The one who trusts in the Lord is certain that He will bring him protection day and night. Prayer moves from the first to the second person in verse 3, and even takes the form of a blessing in verses 7 and 8. This will conclude the prayer of different singers by the prospect of change.
Psalm 121 has the Latin incipit, Levavi oculus. In the Anglican Book of Common Prayer, it is prescribed for use on day 27 of each month, at Morning Prayer. The first verse is frequently quoted on monuments and memorials commemorating those inspired by mountains or hills. A well known example is a stained glass window in Church of St Olaf, Wasdale in the English Lake District National Park, which quotes Psalm 121 as a memorial to members of the Fell & Rock Climbing Club who were killed in the First World War.Spurgeon called it a soldier's song as well as a traveller's hymn while Livingstone read the Psalm with his family dockside on his leaving for Africa.