Read Job 21 
Does it really matter if a person believes in Jesus? Can’t someone simply do good, live in peace with others and have a good life? The answer to the second question is, absolutely yes. There are many people who do not profess faith in Jesus Christ that are nice people, helpful people, loving people. If only the self-professing Christians did good deeds, we would have an even darker world on our hands than we do now.
However, the initial question of Jesus does in fact matter. Professing the name of Christ does not guarantee decent and loving character. As there are many loving non-Christians, there are also many inconsiderate and selfish Christians. Sincere and authentic faith in Jesus Christ matters in this world to all people because of security. Regardless of where a person comes from, everyone in this world attempts to find security in something. We all do. We all seek something that allows us to find rest at night. We all seek something that gives us the permission to find confidence in a world that so often leaves us feeling helpless.
All people have the ability to do good and love others because we were designed for righteousness and love. On the contrary, all people seek to find something to hold onto in the storm because all people were created to exist in the presence and care of an almighty God but now find themselves alienated and trying to get back what was lost. The manner in which we pursue security in worldly things gives us a clue about our origins and our Creator. A person who believes and professes faith in Jesus Christ no longer scrambles to find security in this world. A person who takes Jesus Christ at His words no longer fears death and what comes next. Christianity obliterates the fear of death, the fear of failure and the fear of loss. In the loving arms of Jesus Christ we can finally find the peace we’ve longed for. We no longer have to live a life of self-preservation and self-vindication. In Christ we are given the gift that we all seek. We are given the gift of perfect and everlasting love. Does it really matter if a person believes in Jesus? To be a nice person? The answer is, no. To find peace and enjoy in what we have without fear and trembling of eventually losing it? The answer is forever yes.