Christianity teaches that Christ as set the world free from sin and death. That in Christ the world was liberated from the heavy burden of the "flesh" or "law". We are people who are free and no longer live under the oppression of guilt, worry, fear or anxiety.
Being set free from something is an amazing thing. I cannot imagine what it is like to be set free from something like slavery or being held hostage. Being set free is something that most of the time we cannot do on our own. If we were able to be free from what holds us captive on our own, then are we really held captive? Being set free is something that requires the assistance of a source outside of the person.
Being set free from something and being set free for something are related but also different. While being set free from something requires the action of an outside source, being set free for something can come from within. Once we are free from, we can decide what we are going to be free for.
Many people upon being free from, take full advantage of this freedom and focus on living for themselves. It makes sense and I do not condemn this position. If I were held under the rule of someone or something it is very tempting to live the rest of my life living for my own self interest and desires. Having no desire to go back to oppression, it makes some logical sense that I would not want to take orders from anyone but from me.
Many people upon being free from, take full advantage of this freedom and focus on living for others. For instance the tradition of the Bodhisattva in Mahāyāna Buddhism, in which a person reaches enlightenment (free from the cycles of death and birth) and then uses that freedom to help others also break the cycle.
This is the mandate of the Christian. Christians believe we are set free from sin and death, not so that we can live for ourselves but that we live for others.
Being free from is a miracle. Being free for is a choice.