Genesis 27:9

Go to the flock and bring me two choice young goats, and I will make them into a delicious meal for your father—the kind he loves.

“Please stay here,” Manoah told Him, “and we will prepare a young goat for You.”

So Jesse took a donkey loaded with bread, a skin of wine, and one young goat and sent them by his son David to Saul.

Treasury of Scripture Knowledge

Go now to the flock, and fetch me from thence two good kids of the goats; and I will make them savoury meat for thy father, such as he loveth:

“Please stay here,” Manoah told Him, “and we will prepare a young goat for You.”

So Jesse took a donkey loaded with bread, a skin of wine, and one young goat and sent them by his son David to Saul.

So then it does not depend on human will or effort

but on God who shows mercy.