Appearance of God Kabir
God Kabir Himself comes as His messenger and Himself delivers His sound knowledge (True Tattavgyan). This is also supported by the Vedas. Yajur Ved mentions that God Kabir himself appears on this earth to spread his knowledge. His name is mentioned in the vedas as "Kavir Dev" which is the same as "Kabir"
Yajurved Adhyay 29 Mantra 25
समिद्धः-अद्य-मनुषः-दुरोणे-देवः-देवान्-यज्-असि- जात-वेदः-आ- च-वह-मित्रामहः-चिकित्वान्-त्वम्-दूतः- कविर्-असि-प्रचेताः।
One, who brings and imparts the healthy/sound knowledge i.e. the true bhakti of the Purna Parmatma who is kind and the real friend of a living being, in the form of a messenger is Himself Kabir