“It is not enemies who taunt me.

I could bear that.

It is not adversaries

Who deal insolently with me.

I could hide from them.

But it is you,

My equal,

My companion,

My familiar friend

I kept pleasant company with you.

We walked in the house of God with the throng.

Let death come upon them.

Let them go down alive to Sheol.

Evil is in their homes.

Evil is in their hearts.”

Now David derides his former friends.  His enemies and adversaries have always taunted him and been mean to him.  He understood that and could hide from them.  The problem was that it was his former friends who were against him.  These were his equals, his companions, his good buddies.  He had great conversations with them.  He enjoyed their company.  They used to worship together in the Temple.  This was the great betrayal.  David may be thinking of the uprising of his son Absalom against him.  His response to them was very stark.  He wanted them dead.  He wanted them to go to hell.  He wanted them to go to Sheol, the underground place of death while still living.  This was very harsh because he beloved that they had evil in their houses and hearts.