"For God so loved the world, that He gave His only begotten Son, that whoever believes in Him shall not perish, but have eternal life.
When man sinned in the garden his relationship with the Father was broken. He could not have intimate fellowship with God because of the sin nature that was now separating him from God. But that is why Jesus hung on a cross and bore our sin, and the punishment our sin deserved. In doing so He provided the way for that old sin nature to be removed and for us to receive a new spirit within so God the Father and man could once again be resorted to have intimate fellowship. Jesus tells us in John 17:3 that eternal life is to know the Father. Not just know about Him, but know Him intimately. That was the primary reason Jesus came. The moment you become born again you should not wait to get to heaven to know your heavenly Father. He wants us to get to know Him now. James tells us when we draw near to Him, He draws near to us. We can do so through His Word, through prayer, and by coming to His house and worshipping Him, being equipped to go out and work together with Him. So don't receive the grace of God in vain. Get to know your Father personally. You will be glad you did.