Another Watchtower argument above is that a person could not fill people or things, only a substance can. This is not teaching that Jehovah can just go anywhere in the heavens or earth, but that He actually fills the space. True, a normal person can not perform most of the functions that the Watchtower uses to disprove the personality of the Holy Spirit. However, if the person is God, as is the Holy Spirit, then He can perform these functions in the same way as the Father and the Son. The Watchtower does admit that there are Bible passages that speak of the Holy Spirit in personal terms.
Personification is the attributing of personal characteristics to inanimate objects for effect.
They fail to understand that personifications are used for a specific purpose in writing. An author will use a personification to drive home a point vividly. Death is personified by the word reign. An impersonal object such as death cannot actually perform action such as reign. The answer is that death is described as being absolute and complete in a person's life.