Biblically speaking, "killing someone is a sin" and even the established laws by the government say "killing is a sin". And here is the situation, you're a doctor by profession and one of your patients is struggling so much from a chronic disease and cannot live for long. Due to the chronic disease, the patient himself and his family beg to undergo lethal injections for a rapid death after all the patient will be dead. Its just like, the patient and his family want to make death even more quicker just to be free from the excruciating pain he is feeling. (lethal injection is the practice of injecting one or more drugs into a person for the express purpose of causing rapid death). They even signed a waiver for such initiative. As a doctor of the said patient, you will be the one to inject the patient. The question is, will you apply lethal injection to the patient all by yourself to grant his wish or not? If you do so, your patient will be free and, if you refuse, your patient will suffer that no else wants to see. After all, it is the patient's wish and you're just doing your job as a doctor.​