And at that time shall Michael stand up, the great prince which standeth for the children of thy people: and there shall be a time of trouble, such as never was since there was a nation even to that same time: and at that time thy people shall be delivered, every one that shall be found written in the book. And many of them that sleep in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt. And they that be wise shall shine as the brightness of the firmament; and they that turn many to righteousness as the stars for ever and ever.
But thou, O Daniel, shut up the words, and seal the book, even to the time of the end: many shall run to and fro, and knowledge shall be increased.
Then I Daniel looked, and, behold, there stood other two, the one on this side of the bank of the river, and the other on that side of the bank of the river. And one said to the man clothed in linen, which was upon the waters of the river, “How long shall it be to the end of these wonders?” And I heard the man clothed in linen, which was upon the waters of the river, when he held up his right hand and his left hand unto heaven, and sware by Him that liveth for ever that it shall be for a time, times, and an half; and when He shall have accomplished to scatter the power of the holy people, all these things shall be finished.
Daniel 12:1-7
This is a prophecy of the last days. We are living in the last days, and there is trouble in this world. We as a people on earth and of the earth are troubled by many things. There is coming a time of greater trouble than any other time in the history of humanity.
This trouble will specifically be directed toward the Hebrew people, to prepare them to meet their Messiah, who is known to Christians as Jesus the Christ. All those who are without Jesus Christ as personal Lord and Savior will go through this great trouble, but you do not need to. Believe on Jesus and you will be delivered from the wrath to come.