Just for clarification: Did Jesus or anyone else ever say there wouldn’t be another prophet AFTER Jesus/the messiah?
It’s confusing to me, because it seems that several prophets in the Bible claim that there will not be a prophet after them, only to be followed by another! So why would it be so impossible for Christians to accept that perhaps God sent Muhammad or Joseph Smith or Bahaullah to clarify his word?
I don’t know where you saw those claims; can you be more specific?
Yes, Jesus is a prophet, but also much more.
It is He of whom Moses prophesied:
De 18:15 "The LORD your God will raise up for you a prophet like me from among you, from your brethren–him you shall heed–
16 just as you desired of the LORD your God at Horeb on the day of the assembly, when you said, ‘Let me not hear again the voice of the LORD my God, or see this great fire any more, lest I die.’
17 And the LORD said to me, 'They have rightly said all that they have spoken.
18 I will raise up for them a prophet like you from among their brethren; and I will put my words in his mouth, and he shall speak to them all that I command him.
19 And whoever will not give heed to my words which he shall speak in my name, I myself will require it of him.
The people recognized this:
Joh 6:14 When the people saw the sign which he had done, they said, “This is indeed the prophet who is to come into the world!”
Joh 6:15 Perceiving then that they were about to come and take him by force to make him king, Jesus withdrew again to the mountain by himself.
St. Paul told us that there are indeed prophets in the Church:
1Co 12:28 And God has appointed in the church first apostles, second prophets, third teachers, then workers of miracles, then healers, helpers, administrators, speakers in various kinds of tongues.
Remember, though, a “prophet” is not necessarily one who tells the future, only one who speaks for God.