And accept that only through him will you be able to enter heaven?
You accept him as the last prophet of God?
We accept Muhammad as the last Prophet of the Prophetic cycle. It is clearly stated in the Quran He is the seal of the Prophets not the seal of the Messengers. The Messengers are Ones Who bring a new Revelation, the Prophets are those Who prophecy and warn. Muhammad was the last of those Who prophesied. After Him came the fulfilment of the prophecies, the Day of God when all the prophecies are being fulfilled.
89:22
and thy LORD shall come, and the angels rank by rank; and hell, on that day, shall be brought nigh: on that day shall man call to remembrance his evil deeds;
By Lord is meant Baha’u’llah the latest Manifestation of God
The Quran further states 31:27
If all the trees on earth were pens and the ocean ˹were ink˺, refilled by seven other oceans, the Words of Allah would not be exhausted. Surely Allah is Almighty, All-Wise.
This explains that the Words of God such as the Bible and Quran, the Revelations of God will never cease.
Because Muslims have listened to their scholars and clergy they have been led astray.
When God sent forth His Prophet Muḥammad, on that day the termination of the prophetic cycle was foreordained in the knowledge of God. Yea, that promise hath indeed come true and the decree of God hath been accomplished as He hath ordained. Assuredly we are today living in the Days of God. These are the glorious days on the like of which the sun hath never risen in the past. These are the days which the people in bygone times eagerly expected. (The Báb, Selections from the Writings of the Báb, p. 161)