John 11:3-4, 27I have neither given nor received unauthorized help on this work. LZ
Mary and Martha came to Jesus saying a man, Lazarus, was ill. They feared he may die. Jesus told them not to worry, he said he'd help the man and it would be for the glory of God and the Son of God.
Unfortunately, by the time Jesus arrived, Lazarus had been dead for four days. Martha was devistated and Jesus felt bad he let his friend's brother die.
In order to show his loyalty and dedication to his friend, Martha, Jesus resurrected her brother. Through this, he proved he was the Son of God. After Lazarus was risen Martha said, “Yes, Lord. I have come to believe that you are the Messiah, the Son of God, the one who is coming into the world.”