Knowing Jesus intimately is a call for the believer to walk in the deepest form of intimacy with the Lord

that I may know Him and the power of His resurrection and the fellowship of His sufferings, being made conformable to His death;

Php 3:10 MKJV

[For my determined purpose is] that I may know Him [that I may progressively become more deeply and intimately acquainted with Him, perceiving and recognizing and understanding the wonders of His Person more strongly and more clearly], and that I may in that same way come to know the power outflowing from His resurrection [[a]which it exerts over believers], and that I may so share His sufferings as to be continually transformed [in spirit into His likeness even] to His death, [in the hope] Phil 3:10 AMPC