(KPA 116-117) Freedom, the eternal, exists in humans because we have no choice in whether or not we get to make choices.
We will now focus our attention on the temporal. As was already mentioned the temporal is the changing or the becoming. With every decision that we make we are in one way or another changed. The person who has to choose to get out of bed in the morning is going to be a product of that decision. If the person chooses to get out of bed and go to work then they are changed in that the experience, one such consequence, of many, could be getting paid. Just as the person who decides to stay in bed will be equally changed by their decision, perhaps they will get fired or lose the days wage which could have, in effect, led to a decision about what to do with that days wage later on down the road. The point is that our decision making process inevitably changes us in some way. .
Given what we now know about humans being both eternal and temporal the paradox is apparent. How can a human be both eternal and temporal if they are contradictions to each other? Kierkegaard answers this question by introducing the concept of "the moment" of decision. Mark C. Taylor in his book Kierkegaard's Pseudonymous Authorship: A Study of Time and the Self describes the moment as: "In this moment, one faces one's possibilities in full recognition of one's actuality, and with a complete awareness of one's freedom (limited though it is) to act to realize these possibilities. The decision that one make's constitutes a further definition of one's actuality." (KPA 119) The eternal and the temporal come together in this moment because in the moment a choice has to be made but the choice is entirely dependent upon the agents fancy. To return to our example, let us say that the person is lying in bed deliberating whether or not to get out of bed this day. Let us say that it is now six fifty nine in the morning and this person starts work at eight o"clock and in order to get to work on time they have to be up by seven o"clock at the latest, I suppose we should also note that being late for work is not an option, if you are late you go home.