'Forgive' in the Bible

Why doth this man thus speak blasphemies? who can forgive sins but God only?

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

And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses.

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