Only God can forgive our sins. He can forgive even this atrocity if He is approached but Man cannot absolve one of one’s sins. If we could do that, Jesus would have never hung on the Cross.
"Of course abortion can be forgiven. Jesus forgives all sins."
"Only God can forgive our sins."
Exactly. Such arrogance.
John, Chapter 20:
verse 21 He said therefore to them again: Peace be to you. As the Father hath sent me, I also send you.
22 When he had said this, he breathed on them; and he said to them: Receive ye the Holy Ghost.
23 Whose sins you shall forgive, they are forgiven them; and whose sins you shall retain, they are retained.
http://www.catholic.com/tracts/the-forgiveness-of-sins