[…] Ornan said to David: “Take [the site of the threshing floor] as your own, and let my lord the king do what seems good to him. Here, I am providing the cattle for burnt offerings and the threshing sledge for the wood and the wheat as a grain offering. I give all of it.”
~1 Chronicles 21:23

When Jehovah’s angel told King David to build an altar at the site of Ornan’s threshing floor, which Ornan was in the middle of using, Ornan did not ask, “Why me?” (1 Chron. 21:20).
On the contrary, he selflessly and with the utmost generosity offered his belongings up as a contribution toward true worship.
King David proceeded to formalize the acquisition by monetarily reimbursing Ornan, for he did not want to half-heartedly fulfill God’s commandment (1 Chron. 21:24,25).
This site became the place around which the entire temple was eventually built by David’s son (2 Chron. 3:1).
Today, the floor may very well still exist under the Muslim Dome of the Rock (“Araunah.” Watchtower Online Library, Christian Congregation of Jehovah’s Witnesses, June 2015. Web 16 Nov. 2015).

We have many opportunities to demonstrate a sincere, generous attitude toward those in the congregation who dedicate all their time and effort to God’s service.
For example, when we enjoy our overseers biannual visits, we are encouraged to invite them to eat or sometimes even share our home with them.
Other times we are invited to donate resources toward expanding construction projects.
If we take advantage of these opportunities, no doubt we will be pleasing Jehovah.