How can you tell me that Muhammad is the last prophet? Alfa, I beg wetin now?

Well, what is logical in saying that Muhammad is the last prophet? While Joel 2:28 says that " And afterward, I will pour out my Spirit on all people. Your sons and daughters will prophesy , your old men will dream dreams, your old men will see visions". Therefore , how can you tell me that prophet Muhammad is the last prophet? You could have as well told me that some evangelists are the last evangelists. Some apostles are the latest apostles, some pastors are the last pastors, some teachers are the last teachers or e.t.c. Come on, Africa wake up. Black men wake up. We still have prophets and prophetesses in Yoruba land today who are confirmed , how then come Muhammad is the last prophet? Africa wake up.