We will know that Wahyu (Prophecy) is reliable. only when we Wahyu have come true No matter how much time has passed The truth will never change!!
Nabeeh Sya said much about Nabi Isa, his birth, his mission in this world. and death Everything came true after 700 years had passed.
“Therefore the Lord himself will give a sign; behold, a young woman (virgin) will conceive. and bore a son. and people will call his name Immanuel."
(Immanuel means Allah is with us)
This Wahyu....it's already come true!!!
When the angels came and told Joseph, Maryam's fiancée, which is a virgin who has never had sexual intercourse, saying... “Take Mary as your wife because the one who was conceived in her was by Al-Ruhulkudusu. She will give birth to a son. Then call his name Jesus (Jesus), for he will save his people from their sins.”
in order that the Wahyu of the Lord might be fulfilled. who spoke through the Prophet Hsaya
References: Isaiah 7:14 Matthew 1:20-23