1 Chronicles 16:10

Glory ye in his holy name: let the heart of them rejoice that seek the LORD.

The verse belongs to the psalm in 1 Chronicles 16:7-36 given by David for bringing the ark of God to Jerusalem, an occasion marked by gladness and inspiration.
It is Hebrew poetry, not prose, so its figurative expression must not be construed literally, just as prose statements must not be interpreted with the fervor of severely rendered poetic diction.
Its setting in 1 Chronicles 16:8-22 contains the same words as the opening of Psalm 105, with its first fifteen verses closely matching Psalm 105:1-15, while 1 Chronicles 16:23-33 corresponds to Psalm 96 with slight variations, with those who held the narrower correspondence teaching that 1 Chronicles 16:8-22 contains the same words found as Psalm 105:1-6.
Its shared covenant language connects with the commandments and the promise concerning Canaan, and keeping God's commandments is linked with a thousand generations.

The verse calls those who seek the Lord to rejoice in heart and to glory and take joy in His holy name.
In its context it commands giving thanks to the Lord, calling on His name, making His deeds known among the people, singing to Him, talking of all His wonderful works, honoring Him with pride, finding gladness in seeking Him, and telling the whole earth of His salvation day by day.
It calls those who know they have present salvation to rejoice in that assurance, because passing from death to life and becoming a child of the King gives great occasion for joy and for daily drawing living water from the wells of salvation.
It calls every professed, born-again follower delivered from death to have a new song that the lost hear and are led by to accept salvation, and in the same breath to pray to be kept from falling.
It shows Israel's duty to make Jehovah's glory known among the Gentile nations so that Gentiles may be converted to God, with God's truth and law given to Israel not for themselves alone but for the whole nation to serve as His priests to the world, a work paralleled by giving truth to the Christian church for the same purpose, with obedient living and open declaration of God winning other nations, and with Gentiles who give themselves to God coming under the same one law as Israel.