The affliction of the psalmist refers to the affliction of Christ (vv. 6-8). This verse is a particular verse concerning Christ’s suffering, which was related to His zeal for God’s house (John 2:17; Psa. 69:9). Here Christ is likened to a lone sparrow on a housetop, referring to the flat roof of a Jewish house, where people would often go to pray (Acts 10:9). This indicates that when the Lord Jesus was on earth, probably there were times when in the night He, like a lone bird on a housetop, would watch and pray (Matt. 14:23; Luke 6:12), caring not for His own interest but for the interest of God and of God’s house.
In typology, Psa. 102 first refers to Christ’s suffering, especially to His death. Christ’s suffering consummated in His death, and through His death the church, God’s house, came into existence. Eventually, the church as God’s house becomes God’s city, God’s kingdom (Matt. 16:18-19; Rom. 14:17; Eph. 2:19).