#They set

Here, the word "they" refers to Laban's family members or to the household servants.

#set food before him

"gave food to the servant"

#said what I have to say

"spoken my words" or "told you why I am here"

#he has become great

Here the word "he" refers to Abraham.

#become great

"become very wealthy"

#He has given

The word "he" refers to Yahweh.