New Revised Standard Version
Then the people rejoiced because these had given willingly, for with single mind they had offered freely to the LORD; King David also rejoiced greatly.

Contemporary English Version
David and the people were very happy that so much had been given to the LORD, and they all celebrated.

New American Bible
The people rejoiced over these free-will offerings, for they had been contributed to the LORD wholeheartedly. King David also rejoiced greatly.

Douay-Rheims Bible
And the people rejoiced, when they promised their offerings willingly: because they offered them to the Lord with all their heart: and David the king rejoiced also with a great joy.

And the people rejoiced, when they promised their offerings willingly: because they offered them to the Lord with all their heart: and David the king rejoiced also with a great joy.

they offered

Deuteronomy 16:10,11 And thou shalt celebrate the festival of weeks to the Lord thy God, a voluntary oblation of thy hand, which thou shalt offer according to the blessing of the Lord thy God. . . .

Judges 5:9 My heart loveth the princes of Israel: O you, that of your own good will offered yourselves to danger, bless the Lord.

Psalm 110:3 With thee is the principality in the day of thy strength: in the brightness of the saints: from the womb before the day star I begot thee.

2 Corinthians 8:3,12 For according to their power (I bear them witness) and beyond their power, they were willing: . . .

2 Corinthians 9:7,8 Every one as he hath determined in his heart, not with sadness or of necessity: for God loveth a cheerful giver. . . .

perfect heart

1 Chronicles 29:17 I know my God that thou provest hearts, and lovest simplicity, wherefore I also in the simplicity of my heart, have joyfully offered all these things: and I have seen with great joy thy people, which are here present, offer thee their offerings.

1 Kings 8:61 Let our hearts also be perfect with the Lord our God, that we may walk in his statutes, and keep his commandments, as at this day.

David

Proverbs 23:15,16 My son, if thy mind be wise, my heart shall rejoice with thee: . . .

Luke 15:6 And coming home, call together his friends and neighbours, saying to them: Rejoice with me, because I have found my sheep that was lost?

John 15:11 These things I have spoken to you, that my joy may be in you, and your joy may be filled.

Philippians 2:15-17 That you may be blameless and sincere children of God, without reproof, in the midst of a crooked and perverse generation: among whom you shine as lights in the world. . . .

Philippians 4:1,10 Therefore my dearly beloved brethren and most desired, my joy and my crown: so stand fast in the Lord, my dearly beloved. . . .

1 Thessalonians 3:6-9 But now when Timothy came to us from you and related to us your faith and charity, and that you have a good remembrance of us always, desiring to see us as we also to see you: . . .