One of the most comforting Scriptures in the Bible is John 14:1-3. 

Let not your heart be troubled;
You believe in God,
Believe also in Me.

In My Father’s house are many mansions;
If it were not so, I would have told you.
I go to prepare a place for you;

and if I go and prepare a place for you
I will come again and receive you to Myself;
That where I am, there you may be also.