In Joshua 7:26, a great heap of stones is raised over Achan as a memorial; Absalom's burial under a heap is analogous.

Proverbs 10:7 says the memory of the wicked rots; Absalom's unmarked heap of stones illustrates that principle.

Jeremiah 22:19 describes a dishonorable burial like a donkey — parallel to Absalom's inglorious heap of stones.

Genesis 31:46 uses stones for a covenant memorial — here stones mark a shameful grave. Opposite purposes.

Genesis 35:20 marks Rachel's tomb with a pillar — a respectful memorial, unlike Absalom's heap of stones.