Genesis 33:8
And he said, What meanest thou by all this drove which I met? And he said, These are to find grace in the sight of my lord.
Cross-reference
In Genesis 32:5, Jacob planned exactly this: sending gifts ahead to find favor with Esau. The reunion scene fulfills that earlier strategy.
Esau's question about the droves directly references the waves of livestock Jacob prepared and sent ahead in Genesis 32:13-20 as gifts to appease him.
In Genesis 32:4, Jacob tells his messengers his intent: 'I will send presents to find favor in his sight' — the explicit motivation behind the gifts he now gives.
In Genesis 32:16, the droves Jacob prepared are detailed — camels, donkeys, cattle, goats — these are the gifts now arriving before Esau.
In 2 Samuel 16:2, Ziba brings David provisions — donkeys, bread, wine, fruit — to win the king's favor through gifts, similar to Jacob's gift strategy with Esau.