Serve in the darkness -- Psalm 134

Psalm 134:1 ...who serve by night in the house of the Lord!

Sometimes we're in the darkness, we can't see any blessings. We can't see the reasons why we're doing what we're doing. Sometimes it just doesn't make sense. But the psalmist says, "bless the Lord!" we serve purely for the Lord, sometimes only the Lord knows that we're serving Him, nobody else sees. We endure, we love only for Him only, nobody else will know.
When we're in the darkness, it's the time to bless the Lord.
And the Lord in His time will bless us from Zion, from His richness of blessings. He's in control of everything, and He is the creator of all glories.