Psalms 122:9

⁷ May there be peace within your walls, and prosperity inside your fortresses.”

⁸ For the sake of my brothers and friends, I will say, “Peace be within you.”

For the sake of the house of the LORD our God, I will seek your prosperity.

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

Compare

BSB: For the sake of the house of the LORD our God, I will seek your prosperity.
KJV: Because of the house of the LORD our God I will seek thy good.
WEB: For the sake of the house of the LORD our God, I will seek your good.
ASV: For the sake of the house of Jehovah our God I will seek thy good. Psalm 123 A Song of Ascents.
DARBY: Because of the house of Jehovah our God I will seek thy good.
BLB: For the sake of the house of YHWH our God I will seek good for you.

Nehemiah 2:10
But when Sanballat the Horonite and Tobiah the Ammonite official heard about this, they were deeply disturbed that someone had come to seek the well-being of the Israelites.
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Psalms 84:10
For better is one day in Your courts than a thousand elsewhere. I would rather be a doorkeeper in the house of my God than dwell in the tents of the wicked.
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Psalms 84:1–2
How lovely is Your dwelling place, O LORD of Hosts!
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Nehemiah 13:14
Remember me for this, O my God, and do not blot out my deeds of loving devotion for the house of my God and for its services.
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John 2:17
His disciples remembered that it is written: “Zeal for Your house will consume Me.”
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Psalms 26:8
O LORD, I love the house where You dwell, the place where Your glory resides.
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Psalms 69:9
because zeal for Your house has consumed me, and the insults of those who insult You have fallen on me.
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Esther 10:3
For Mordecai the Jew was second only to King Xerxes, preeminent among the Jews and highly favored by his many kinsmen, seeking the good of his people and speaking peace to all his countrymen.
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