When did Joseph Smith first understand the doctrine of eternal progression?

Another question asked why Kolob is not mentioned in the New Testament. In fact, the only reference is in the Book of Abraham. Not even the Book of Mormon has any reference to it, as I understand. This led to me to wonder when exactly Joseph Smith came to understand the doctrine of eternal progression along with identifying that there was a place called Kolob. The Book of Abraham was purportedly translated in 1835, whereas the Book of Mormon was published in 1830. So, was the doctrine of eternal progression something Joseph Smith learned from the Book of Abraham or was he already teaching that prior to the Book of Abraham translation? Did the teaching originate as a revelation to Joseph Smith prior to 1835 or did it come in response to the translation of the Book of Abraham?