According to Dr. Mark E. Moore, over 75% of the references to the Holy Spirit in the Gospel of Luke speak to the empowering of a person to communicate something regarding Jesus.
Here are some references from the book of Luke:
Luke 1:15
Luke 1:35
Luke 1:41
Luke 1:67
Luke 2:25-27
Luke 3:22
Luke 4:1
Luke 4:14, 18-19
Luke 10:17-21
Luke 12:11-12