Near death experiences (NDEs) and visions of Heaven are important as they are real testimonies of what happens when we die.
Revelation 12:11
They triumphed over him by the blood of the Lamb and by the word of their testimony…
People who experience NDEs come from all walks of life. Some believe in God and some do not. After the experience, they are all on the same page as they talk about experiencing Heaven and/or Hell as well as accounts of meeting God, Jesus, angels, and passed away loved ones or relatives. Their testimonies resonate with each other and agree. They lend extra credibility to the teachings of Jesus Christ and teachings from other biblical writers.