What persuasive technique does Antony use when he mentions Caesar’s will but then refuses to read it?

The persuasive technique he uses is anticipation.

He is using Anticipation.

Explanation:

Antony brings up the fact that Caesar has a will made, but chooses not to bring it up, as it really would not help sway the audience.

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.