God loves the world so much that he gives what is most imporant - his only-begotten Son. Then, the Son of God shares his richness with humanity. He is the source of life and mercy for all people. Although not everyone believes in Jesus Christ, he keeps sending the Holy Spirit into the hearts of men. Of course, he is not able to do the miracles without the good will of the human person. For each person has freedom to choose his light or reject it. However, without his grace people walk in darkness and are easily misled. Consequently, they commit sins and become unhappy in their life. They also destroy their beautiful vocation of loving God and one another. Therefore, all Christians ought to live the truth and to come to the light of Christ. As a result, their works are clearly seen as done in God. Nowadays, the world needs such examples and witnesses who do live according to the Gospel.