When i came across the question for the week on the need for gurus or teachers for spiritual growth i can only come to one conclusion judging from my experience in the Christendom and the understanding of God and His principles that one needs divine wisdom and teachings for one to be able to grow spiritually. This moreso important as by default, the bible says faith cometh by hearing and hearing by the word of God. This word is thought by spiritually seasoned apostles whose ministry has been ordained and guaranteed by God.
There has been no one in History and even living that has attained a level of spiritual growth and spirituality without a certain degree of mentorship and encounter either directly by God or by God's people.
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I thank God for the life of Apostle Joshua Selman who has been my mentor over the years and His teachings about God has proven that he has been seasoned and tested by God himself. He has passed through the cave of Adullam and has come into the marvelous light to teach, to preach and to set the captives free. for one to grow spiritually in the Christendom, one must have to pass through several test, a cave of Adullam experience where you let go of everything you have and you are and come forth into the marvelous light being a new creature.
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Make no mistake, a guru majorly is one who is endowed with the wisdom of this world and things of the world but a teacher, an apostle, a rabbi is one who has been endowed with divine wisdom to pass knowledge of the hidden secrets of the the spirituality of Christendom to new believers to aid their growth.
When it comes to Spirituality and spiritual growth the concepts and factors that works with the acquisition of knowledge in the circular world does not conform to the operations of the spiritual realm. In the spiritual realm, understanding God himself requires the death of you as an individual in the sense that the price to pay for all of God is all of You. the bible says that verily verily i say unto you except a man be born against he cannot see the kingdom of God. the first process of spiritual growth is wiping the slate clean which means your body has to die first and cleansed for you to come alive in the light of God's word through the ministration of the Holy spirit.
In the acquisition of Knowledge Gurus are need and in the sense of spiritual growth Apostles are needed coupled with the ministration of the Holy spirit giving insight into the understanding of God and things of God. Apostles and spiritual teachers bring's light to our darkness and illuminates our mind, opening our eyes to the things of the spirirt.