Genesis 39:5 "From that time that he made him supervisor in his house and over all that he had, the Lord blessed the Egyptian's house for Joseph's sake; and the Lord's blessing was on all that he had in the house and in the field"
According to the dictionary, the phrase, "for Pete's sake" is a euphemism of "for goodness sake" or "for mercy's sake". It literally means that someone is favored and successful because of the presence or the participation of someone else.
In Genesis 39, the reason for Joseph's success is found in verse 2 "and the Lord was with Joseph, and he was a successful and prosperous man; and he was in the house of his master".
I like the Amplified Bible translation that says, "and the Lord was with Joseph, and he [though a slave] was a successful and prosperous man". Though he was raised in a wealthy home, he stood naked, a slave on an auction block, with nothing to his name. Yet God calls him a blessed and prosperous man. How can this be?
Joseph's success wasn't based on his outward conditions. God doesn't measure success and prosperity the way the world does. In God's kingdom, you are a success because of who you are in Christ, not because of what you have, what you drive, where you live, or what your bank account says.
You are Abraham's seed and heirs according to the promise. When you truly grasp who you are in Christ, eventually who you are on the inside will make its way to your outward condition.
In verse 5 it says that from the moment Joseph was put in charge, everything was blessed. The blessing of God was on Joseph, no matter where he went, whatever he put his hand to prospered. The same goes for you. The business you work for is blessed and successful because you're there!
For Pete's sake! Wherever you go things are better. The blessing is on your community for your sake, your family for your sake, your job for your sake. You are a blessing going someplace to happen!