134:1 Behold, bless ye the LORD, all ye servants of the LORD, which by night stand in the house of the LORD.
134:2 Lift up your hands in the sanctuary, and bless the LORD.
134:3 The LORD that made heaven and earth bless thee out of Zion.
The verse centers on "behold", "bless", "lord", "servants", "night", "stand", and "house". It is saying that the verse draws attention to "behold" and "bless", so its meaning should be read from those terms before moving to application.
The local KJV text gives this verse as the immediate unit, so "behold" and "bless" carries the first interpretive weight. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "behold" and "bless" with trust shaped by these words, not by a vague optimism outside the passage.