Psalms 135:20

18 They that make them are like unto them: so is every one that trusteth in them.

19 Bless the LORD, O house of Israel: bless the LORD, O house of Aaron:

Bless the LORD, O house of Levi: ye that fear the LORD, bless the LORD.

21 Blessed be the LORD out of Zion, which dwelleth at Jerusalem. Praise ye the LORD.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
O house of Levi, bless the LORD; you who fear the LORD, bless the LORD!
KJV
Bless the LORD, O house of Levi: ye that fear the LORD, bless the LORD.
WEB
House of Levi, praise the LORD! You who fear the LORD, praise the LORD!
ASV
O house of Levi, bless ye Jehovah: Ye that fear Jehovah, bless ye Jehovah.
DARBY
House of Levi, bless ye Jehovah; ye that fear Jehovah, bless Jehovah.
BLB
O house of Levi, bless YHWH; [all you] fearing YHWH, bless YHWH!
ÅB
Levis hus, lov Herren! Dere som frykter Herren, lov Herren!
OTB
Levis hus, ære Herren;
Dere som frykter Herren, ære Herren.
B1930
Levis hus, lov Herren! I som frykter Herren, lov Herren!

Study notes (Tyndale)

Original text and word study