Psalm 121 is a song of trust, similar to Psalms 23, 46, and 91, distinguished by their theme of confidence in God. As one commentator puts it, ‘This psalm affirms that those who are in relationship with the Lord are safe in his care. Their mountains may be great, but their Maker is greater. Their problems may be overwhelming, but his protection is ever available. Their hurts are inevitable, but his help is inexhaustible.’