1. A call for God's servants to praise Him 134:1-2

Priests were on duty 24 hours a day at the temple. They served as guards as well as offering sacrifices and carrying out other sacerdotal functions during the daylight hours. The psalmist called on them to praise God even at night. Lifting up the hands in prayer was a common posture that symbolized the petitioner's offering praise up to God and receiving blessings from Him.