'Forgive' in the Bible

Why doth this man thus speak? he blasphemeth: who can forgive sins but one, even God?

But that ye may know that the Son of man hath authority on earth to forgive sins (he saith to the sick of the palsy),

And whensoever ye stand praying, forgive, if ye have aught against any one; that your Father also who is in heaven may forgive you your trespasses.

But if ye do not forgive, neither will your Father who is in heaven forgive your trespasses.