The Last StepBy Rabbi Jack Abramowitz
This is the last in the series of 15 Psalms that begin “A Song of Ascents.” David tells all those who consider themselves servants of G-d to bless Him. These people get up from their beds at night to pray to G-d in the Temple. They are told to raise their hands towards Him in prayer. David concludes with a blessing to the people, that G-d should bless them in return.
According to some opinions, this Psalm refers to the Kohanim, (the priests). The Kohanim in the Temple daily blessed the people in G-d’s Name, raising their hands as they did so.