Exodus 4:27
And the Lord said to Aaron, Go into the wilderness to meet Moses. And he went, and met him in the mount of God, and kissed him.
Cross-reference
Exodus 4:14-16 records God's plan for Aaron to be Moses' spokesman — this verse shows Aaron actually going to meet Moses, fulfilling that plan.
Exodus 3:1 identifies this same 'mountain of God' (Horeb) as where Moses saw the burning bush — the location of Aaron's meeting.
Exodus 19:3 places Moses on Mount Sinai, the same mountain where Aaron met him here — a later covenant event at the same site.
In 1 Samuel 12:8, Samuel summarizes that God sent Moses and Aaron to deliver Israel — directly referencing the mission that begins with this meeting.
Genesis 29:13 describes Laban embracing and kissing Jacob — a family reunion kiss that parallels Aaron's greeting of Moses.
In Genesis 45:15, Joseph kisses his brothers in reunion — mirroring Aaron's kiss of Moses here, both family reconciliations after separation.