Romans 10:9-10

"That if thou shalt confess with thy mouth the Lord Jesus,

and shalt believe in thine heart that God hath raised him from the dead,

thou shalt be saved.

For with the heart man believeth unto righteousness;

and with the mouth confession is made unto salvation"

                                Romans 10:9-10 KJV


or if you want to change the 161l English words of the KJV to today's words -- it reads


That if you will confess with your mouth the Lord Jesus,

and believe in your heart that God hasraised Him from the dead,

you will be saved.

For with the heart man believes unto righteousness;

and with the mouth confession is made unto salvation

                                    Romans 10: 9-10

Either way (old English or currently familiar words) this is essential to deciding where you will spend eternity -- in heaven vs. in hell.