1 Chronicles 29:6
Then the chief of the fathers and princes of the tribes of Israel, and the captains of thousands and of hundreds, with the rulers of the king’s work, offered willingly, Then the chief of the fathers and princes of the tribes of Israel, and the captains of thousands and of hundreds, with the rulers of the king’s work, offered willingly,
The verse records a gathering near David's death, when he summoned the princes of Israel with representative men from all parts of the kingdom to receive in trust the costly gold, silver, stones, marble and precious woods he had collected for the temple, since other hands must build the house for the ark. He gave them his dying charge in the sight of Israel and in the audience of God to keep and seek all God's commandments so they could possess the good land and leave it for their children forever, and he sought their concurrence and support in the great work commanded to be committed to Solomon his son. Though physical weakness made his personal attendance unexpected, he was enabled to address the people for the last time with more than usual fervor and power.
David had made large provisions for the temple, but the work of building it was to be carried out by Solomon; David's experience could guide and encourage him, but the younger man had to do the work. The leaders willingly responded to David's appeal with gifts for the service of God's house, the sanctuary to be built for the Lord, following David's generous example. Their offering was part of a generous, wholehearted giving for the temple work.
Their willing response included more than material gifts; they offered themselves, their abilities and skills, and willing service for the temple work, using them wholeheartedly. Their willing gifts showed loyalty and devotion and reflected wholehearted support for the sacred work. The generous contribution made with a wholehearted spirit brought the people joy.
Their readiness to give came from God: he had provided their riches and by his Spirit moved their hearts to offer them, to return to him what was already his. David saw their willingness as evidence that God was moving their hearts. Without God's work in their hearts the temple would not have been built.
Willing service and offerings to God are therefore gifts of his grace and not a cause for human glory; God, not human leaders, deserves the glory. The verse is an example of special freewill offerings for sacred work, given in addition to regular contributions; such offerings supported God's service and benefited the people.