# I have been with you for such a long time and you still do not know me, Philip?

"Philip, I have been with you disciples already for a very long time. You should know me by now!"

# Whoever has seen me has seen the Father

To see Jesus, who is God the Son, is to see God the Father. This refers to God the Father. It is best to translate “Father” with the same word that your language uses to refer to a human father. 

# How can you say, 'Show us the Father'?

"So you really should not be saying, 'Show us the Father!'"