He is Jesus Christ to Christians and Prophet Isa to Muslims.
Christians and Muslims believe he will return to earth (also known as The Second Coming) and restore justice.
Some of my favorite sayings of Jesus (from Bible):
Immediately Jesus reached out his hand and caught him. “You of little faith,” he said, “why did you doubt?” – Matthew 14:31.
“According to your faith let it be done to you.” – Matthew 9:29.
(You have faith and confidence – you win. You have fear and doubts – you lose.)
“Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. – Matthew 7:7
(If you want and try to get something with all your heart, God will help and guide you.)