Genesis 39:5

5 And it came to pass after that he was set over his house, and over all that he had, that the Lord blessed the house of the Egyptian for Joseph's sake; and the blessing of the Lord was on all his possessions in the house, and in his field.

Genesis 39:5 Meaning and Commentary

Genesis 39:5

And it came to pass from the time that he had made him overseer
in his house, and over all that he had
How long he was in this office is not certain; there must be some time for the following observation; and during all the time he was in it, it was easily discerned, that the Lord blessed the Egyptian's house for Joseph's sake;
that is, much more than before; everything under his hands succeeded before, but now much more abundantly; Potiphar's family was blessed with health, his substance increased, he grew rich and wealthy, and abounded with all good things: and the blessing of the Lord was upon all that he had in the house,
and in the field;
his domestic affairs prospered, his fields brought forth plentifully, his cattle were fruitful and stood well; every thing belonging to him within doors and without happily succeeded, through the blessing of God upon it, and all for Joseph's sake.

Genesis 39:5 In-Context

3 And his master knew that the Lord was with him, and the Lord prospers in his hands whatsoever he happens to do.
4 And Joseph found grace in the presence of his lord, and was well-pleasing to him; and he set him over his house, and all that he had he gave into the hand of Joseph.
5 And it came to pass after that he was set over his house, and over all that he had, that the Lord blessed the house of the Egyptian for Joseph's sake; and the blessing of the Lord was on all his possessions in the house, and in his field.
6 And he committed all that he had into the hands of Joseph; and he knew not of anything that belonged to him, save the bread which he himself ate. And Joseph was handsome in form, and exceedingly beautiful in countenance.
7 And it came to pass after these things, that his master's wife cast her eyes upon Joseph, and said, Lie with me.

The Brenton translation of the Septuagint is in the public domain.