I don't know which version of scripture you are using, but mine does not use the term "horizontal".
You can't read too well as I never claimed the term "horizontal" was found in the Biblical text. You are willing ignorant as the text spells it out clearly that he speaking in relationship of men and in the view of men.
Jesus was speaking to certain Pharisees here, not all men. You lack discernment.
Are you so ignorant to imagine that salvation occurs one way for some men and another way for other men???? If the pharisee must be "FIRST" cleansed within before God recognizes anything clean outside so it is with all men as God does not have two different ways to be saved. Can't you read? Twice he states that the external "clean" is only in "appearance" before men but rejected by God as the internal is unclean.