"they make us partakers of the divine nature"
I think there is a great and vast difference between "partaking" of the divine nature and "becoming" the divine nature.
"to deify us"
I would believe here that Calvin referred to Christ's covering of us becoming our own. But that any sense of a "deity" remains Christ, given to us, but not becoming us.
Do you believe as Aquinas said that we become "gods?"
"The only-begotten Son of God, wanting to make us sharers in his divinity, assumed our nature, so that he, made man, might make men gods." -- Aquinas
If so, it sure isn't difficult to see how the LDS fell into this error.
One day, God willing, when we are in heaven, we will not be God. We will be redeemed spirits beholding God.
That of course is precisely the Catholic view of it, as I posted way upthread.
I have no reason to believe that he was using the phrase in anything other than an orthodox fashion. Since we experience union with Christ, we participate, in some sense, in a deification. That is not to say we become capital-G God.
Again, I think it is important to understand the doctrine in its historical context within the orthodox Church.
If so, it sure isn't difficult to see how the LDS fell into this error.
I have no knowledge that the LDS heresy had its genesis in the statements of the church fathers.
The LDS doctrine is natural outgrowth of the heresy of tri-theism and that God the Father has a body of flesh and bone.
Genesis 3:4
And the serpent said unto the woman, Ye shall not surely die:
3:5 For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
We know what is good and what is evil, and if we don't, then we have to look to God's word to tell us, not to mankind.
We will be adopted sons of God, a world of difference.