What is the Gospel? According to the New Testament, the Gospel is the death, burial and resurrection of the Lord Jesus Christ, which provides a way for sinful man to gain salvation. Why is this needed? It is because everyone has sinned, and no one has met the qualifications to enter heaven.
The good news is that God loved mankind so much that He gave His only begotten Son to be born among men, live among men, and die among men, to pay for the sins of the world. Anyone who will believe on Him as their Lord and Savior will gain eternal life.
This is the message that we need to share to other people. We must tell people around us that there is no hope in riches, intellect, power and fame. The only hope in this world can be found in Jesus.