Genesis 32:18

Then thou shalt say, They be thy servant Jacob’s; it is a present sent unto my lord Esau: and, behold, also he is behind us.

Cross-reference

In Genesis 32:4, Jacob uses the same 'thy servant' and 'my lord Esau' language — his consistent strategy of humble deference throughout these instructions.

Genesis 32:5 Historical context

In Genesis 32:5, Jacob lists his oxen, flocks, and servants — the very possessions he is now sending ahead as a gift to Esau.