1 Samuel 31:13
And they took their bones, and buried them under a tree at Jabesh, and fasted seven days.
Nave's Topical Index—AKJV

2 Samuel 1:12
And they mourned, and wept, and fasted until even, for Saul, and for Jonathan his son, and for the people of the LORD, and for the house of Israel; because they were fallen by the sword.
Nave's Topical Index—AKJV

2 Samuel 3:35
And when all the people came to cause David to eat meat while it was yet day, David swore, saying, So do God to me, and more also, if I taste bread, or ought else, till the sun be down.
Nave's Topical Index—AKJV