Psalms 103:20

¹⁸ To such as keep his covenant, and to those that remember his commandments to do them.

¹⁹ The LORD hath prepared his throne in the heavens; and his kingdom ruleth over all.

Bless the LORD, ye his angels, that excel in strength, that do his commandments, hearkening unto the voice of his word.

²¹ Bless ye the LORD, all ye his hosts; ye ministers of his, that do his pleasure.

²² Bless the LORD, all his works in all places of his dominion: bless the LORD, O my soul.

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

Compare

BSB: Bless the LORD, all His angels mighty in strength who carry out His word, who hearken to the voice of His command.
KJV: Bless the LORD, ye his angels, that excel in strength, that do his commandments, hearkening unto the voice of his word.
WEB: Praise the LORD, you angels of his, who are mighty in strength, who fulfill his word, obeying the voice of his word.
ASV: Bless Jehovah, ye his angels, That are mighty in strength, that fulfil his word, Hearkening unto the voice of his word.
DARBY: Bless Jehovah, ye his angels, mighty in strength, that execute his word, hearkening unto the voice of his word.
BLB: Bless YHWH, His angels, mighty of strength, doing His word, to listen to the voice of His word.

ÅB: Lov Herren, dere hans engler, dere veldige i makt, som fullbyrder hans ord, idet dere adlyder hans ords røst!
OTB: Pris Herren, dere Hans engler,
Mektige i styrke, som utfører Hans ord,
Som adlyder lyden av Hans ord!
B1930: Lov Herren, I hans engler, I veldige i makt, som fullbyrder hans ord, idet I adlyder hans ords røst!

Hebrews 1:14
Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?
Read in context
Psalms 148:2
Praise ye him, all his angels: praise ye him, all his hosts.
Read in context
Luke 1:19
And the angel answering said unto him, I am Gabriel, that stand in the presence of God; and am sent to speak unto thee, and to shew thee these glad tidings.
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Matthew 26:53
Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
Read in context
Luke 2:13–14
And suddenly there was with the angel a multitude of the heavenly host praising God, and saying,
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2 Kings 19:35
And it came to pass that night, that the angel of the LORD went out, and smote in the camp of the Assyrians an hundred fourscore and five thousand: and when they arose early in the morning, behold, they were all dead corpses.
Read in context
Psalms 78:25
Man did eat angels’ food: he sent them meat to the full.
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Matthew 6:10
Thy kingdom come. Thy will be done in earth, as it is in heaven.
Read in context