genuine

Sri Bhagavan (Visnu) said: 

96-97. This is not befitting you, O Skanda. Listen as to who is a genuine devotee of Rudra. Sages conversant with the Vedas know that there are two bodies of Siva, the Lord of the daughter of the Mountain. One is that consisting of the beings. The other is the visible one. One who hates and harasses all living beings is not said to be a genuine devotee of Rudra. 

98-100. A person who is devoted to Rudra must be merciful towards all living creatures. Hence slay this (false devotee) of the Pinaka-bearing Lord, because he is the hater and harasser of all living beings, especially of human beings. O Lord, in this matter I do not, find any fault for you.

Source

https://freeglobaluniversity.blogspot.com/search/label/Skanda