And the LORD God took the man, and put him into the garden of Eden to work it and to keep it.
All Commentaries on Genesis 2:15 Go To Genesis 2
Augustine of Hippo
AD 430
Although man was placed in paradise so as to work and guard it, that praiseworthy work was not toilsome. For the work in paradise is quite different from the work on the earth to which he was condemned after the sin. The addition “and to guard it” indicated the sort of work it was. For in the tranquility of the happy life, where there is no death, the only work is to guard what you possess. .