Sharing the Teaching
One who explains this supreme secret to the devotees performs the highest devotion to Me and will come to Me without doubt.
Teaching the Gita is itself the highest service. Those who share this wisdom with receptive souls perform supreme devotion. This blessing encourages transmission of truth from generation to generation. The teaching lives through being shared. Every sincere teacher participates in the eternal tradition (parampara) that keeps wisdom alive. Such teachers are promised liberation.
For one who explains this supreme secret to the devotees, pure devotional service is guaranteed, and at the end he will come back to Me.
This verse establishes the sacred duty of transmission—those who have received must share. Truth is not for hoarding but for spreading.
Bhagavad Gita