When speaking, oralise punctuation into verbal text in the same way as it is done by people who are writing. Punctuation introduces pause, and acts to subtlety reinforce points being made. Those pauses provide listeners with the time to think about the significance of what has been said. Full stops incorporated into speech are exceptionally important in this regard.
Without pause reinforced by punctuation, speakers can go on and on AND ON. The message being delivered can become lost in verbosity.
Punctuated speech which amplifies pause is about superior oral delivery.