Jesus said.

"Let not your heart be troubled; you believe in God, believe also in Me."
John 14:1
"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."
John 14:2
"I am the way the truth and the life. No one comes to the Father except through Me."
John 14:6

Jesus said. I believe Him.