Sc. 2.
"Certainly the Jew is the very Devil's incarnation."
"Do you know me, father?"
Mr. Dyce thinks Shakespeare wrote 'not know,' which occurs again in Lancelot's next speech. I have adopted his reading.
Sc. 3.
"If a Christian do not play the knave and get thee."
The 2nd folio properly read did. (See on Jul. Cæs. ii. 2.) This change of tense was not unfrequent. We often meet see for saw.