In the Scriptures, we hear the cry of the Israelites in Egypt,  the cry 
of the poor and oppressed. "I have witnessed the affliction of
 my people in Egypt and have heard their cry of  complaint against their
 slave drivers, so I know well what they are suffering" (Exodus 3:7). 
There is also the cry of creation, the ecological cry. "
 Yes, we  know that all creation groans and is in agony even until now"
 (Rom. 8:22).
There is a common element in  these two 
cries: The cry that comes from the failure to fulfill our social and 
economic 
obligations and to recognize our solidarity with 
all humans, and the cry that comes from a lack of harmony between 
humanity and nature--the despoiling of nature often justified by putting
 commercial concerns before human concerns. Both cries call out to us 
because of the same injustice and the same suffering.  
In both 
injustices, the
 poor are the ones who suffer. Social injustice brings about ecologic 
injustice, and ecologic injustice brings about social 
injustice. As Christians we need to attune our ears to this cry and, 
like the Old Testament prophets, express our just anger against this 
injustice, against the exploitation of the poor and oppressed.  Social 
and ecological justice, closely related, are fighting the same enemy: 
exploitation of the powerless, in most cases for personal gain. 
Our
 relationship with nature should be a familial relationship that seeks a
 sustainable
 development for both partners. If we want to free ourselves from all 
that enslaves us, writes a professor of scripture, we must start by 
living in harmony with 
nature. By working 
for the liberation of the poor, and by identifying with the poor, we are
 
liberating ourselves. 
The professor ends his article by 
reminding us it's not enough to acknowledge the close relationship of 
social and ecological justice, we need also more study and discussion of
 this relationship to help us complement their interconnectedness. As we
 work toward this goal, not only will our political, 
economic, and social concerns change for the better, but when we link 
this change with a heightened appreciation of our ecological 
responsibilities, and when all four concerns are seen as belonging to 
one undivided whole, then we will experience the liberation we are all 
seeking. And the Christian 
response will naturally follow.