John 17:3 (KJV)
And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent.
Just imagine if the eternal life Jesus was praying about was in this fallen world. Would it be worth living? We would be stuck in decaying mortal bodies and still not be with the one who is eternal.
The one true God is the only constant, the only truly eternal being. So we must join him to be truly eternal. The eternity we spend with God is more of a state of being then a length of time. Is this world we live by clocks and calendars, but in heaven there will be no time, only the opportunity to praise and worship God giving God all the glory.
I thank you for sending your son as a sacrifice for my sin, so that I will be able to be present with you when I depart this fallen world. I am looking forward to the day that I will look upon your face and be able to sing praises in your presence.
In Jesus name I pray amen.