The call of the Holy Spirit is the heart cry of Christ which is that you hear Him. The correction to all seven churches in Revelation 2 & 3 is "if you can hear what the Spirit is saying to the churches." 

Recommended Resources:

 Book: David Cuppett, Wisdom Filled Warriors – Awakening a New Breed of Deliverer

Available from Amazon

https://www.amazon.com/dp/B09P5BY6FD/ref=cm_sw_r_awdo_navT_a_XQCGF5CRP8YKGH64HM3F

Book: David Cuppett, The Key of David – Experiencing the Voice of God

Available from Amazon ...