Explain what literary device is used in this quote and why it is used. From Hamlet Act 1, Scene 3

"From this time
Be somewhat scanter of your maiden presence.
Set your entreatments at a higher rate
Than a command to parley. For Lord Hamlet,
Believe so much in him, that he is young,
And with a larger tether may he walk
Than may be given you. In few, Ophelia,
Do not believe his vows, for they are brokers,
Not of that dye which their investments show,
But mere implorators of unholy suits,
Breathing like sanctified and pious bawds
The better to beguile. This is for all:
I would not, in plain terms, from this time forth
Have you so slander any moment leisure
As to give words or talk with the Lord Hamlet.
Look to 't, I charge you. Come your ways.
OPHELIA
I shall obey, my lord."