Genesis 42:6 describes Joseph's brothers bowing down to him, fulfilling the dreams Joseph had in Genesis 37:7-10, where he saw his brothers' sheaves bowing to his sheaf.
Thematic focusFulfillment of Dreams, Divine Providence.
The brothers' fear in Genesis 42:28 upon finding their money returned in their sacks is paralleled by their later fear in Genesis 44:16 when they are accused of stealing Joseph's cup.