Al-An'am - 6:67

لِّكُلِّ نَبَإٍ مُّسْتَقَرٌّ وَسَوْفَ تَعْلَمُونَ
[6:67]
For every prophecy is a term, and you will come to know (it).
For every message is a limit of time, and soon shall ye know it."
For every announcement there is a term, and ye will come to know.