We celebrate Mary’s assumption, body and soul, into Heaven. This has implications on us, though, too.
First, it shows that we have a great advocate in Mary. She is in Heaven in a way that no one else is, except for Jesus.
Second, it shows that this is what we are capable of. When we die, our soul can reach Heaven, but that is not the end of it. We are body-soul composites. Our body is left dead; however, in the end, we will be reunited with our restored bodies. After all, Jesus did promise us resurrection. “Whoever eats my flesh and drinks my blood has eternal life, and I will raise him on the last day.” – [John 6:54]
We are indeed body-soul composites, since what we do with our body affects our soul and vice versa. Mary was assumed into Heaven, body and soul, because of her perfect body and soul. She was conceived without sin and as such her body never knew sin, even original sin. She maintained her sinless nature throughout live, even while watching her Son die on the Cross.