Hashem banished Adam from the Garden because of his sin. From then on Adam had "to work the soil from which he was taken."[i] The simplest meaning is that Adam's body was made from the soil and he was to work with the kind of soil from which he was made.
But there is a hint to a deeper meaning here. While in the Garden Adam had to tend the Garden but it was a pleasure. Now it was different. Adam had to work by the sweat of his brow with the soil from where he was taken, i.e. from where he was coming from was now what he had to work with. This hints to the concept mida keneged mida (portion across from portion). It means our past and present deeds dictate our future deeds.
In this world this is a fixed principle… we are always faced with the results of our previous actions. But there is a huge exception… the great kindness of teshuva (repentance). Any time we want we can turn from our previous deeds and their negative repercussions will not affect us.
The Zohar says[ii] just like did G-d put Man in the Garden of Eden back then "So does G-d do now to any man…when he repents of his sins and occupies himself with Torah."