Psalms
Chapter
Psalms is a collection of poems written over a long period of time by various authors. They express the heart of humanity in all generations through a variety of religious experiences. Originally the poems were chanted or sung to the accompaniment of a stringed instrument. One of the characteristics of this Hebrew poetry is parallelism; that is, the second line reiterates the idea of the first line.
Psalm 127
127:1 A Song of degrees for Solomon. Except the LORD build the house, they labour in vain that build it: except the LORD keep the city, the watchman waketh but in vain.