1 Chronicles 10:12

They arose, all the valiant men, and took away the body of Saul, and the bodies of his sons, and brought them to Jabesh, and buried their bones under the oak in Jabesh, and fasted seven days.

Genesis 35:8

But Deborah, Rebekah's nurse, died, and she was buried beneath Beth-el, under an oak: and the name of it was called Allon-bachuth.

Genesis 50:10

And they came to the threshing-floor of Atad, which is beyond Jordan, and there they mourned with a great and very sore lamentation: and he made a mourning for his father seven days.

2 Samuel 3:35

And when all the people came to cause David to eat food while it was yet day, David swore, saying, So do God to me, and more also, If I taste bread or aught else, till the sun is down.

2 Samuel 21:12-14

And David went and took the bones of Saul and the bones of Jonathan his son from the men of Jabesh-gilead, who had stolen them from the street of Beth-shan, where the Philistines had hanged them, when the Philistines had slain Saul in Gilboa:

Treasury of Scripture Knowledge

Summary

They arose, all the valiant men, and took away the body of Saul, and the bodies of his sons, and brought them to Jabesh, and buried their bones under the oak in Jabesh, and fasted seven days.

Bible References

The oak

Genesis 35:8
But Deborah, Rebekah's nurse, died, and she was buried beneath Beth-el, under an oak: and the name of it was called Allon-bachuth.
2 Samuel 21:12
And David went and took the bones of Saul and the bones of Jonathan his son from the men of Jabesh-gilead, who had stolen them from the street of Beth-shan, where the Philistines had hanged them, when the Philistines had slain Saul in Gilboa:

Fasted

Genesis 50:10
And they came to the threshing-floor of Atad, which is beyond Jordan, and there they mourned with a great and very sore lamentation: and he made a mourning for his father seven days.
2 Samuel 3:35
And when all the people came to cause David to eat food while it was yet day, David swore, saying, So do God to me, and more also, If I taste bread or aught else, till the sun is down.