What does it mean to pierce Christ spiritually?

To pierce Christ spiritually involves the rejection of His gospel, manifesting a refusal to believe and follow Him. This is evidenced in John 1:11, where it states, 'He came to His own, and His own received Him not.' Such rejection pierces His heart deeply, as our unbelief symbolizes a spear thrust into Him. This piercing also includes the actions of professing Christians who claim to follow Him yet live in rebellion against His teachings, effectively 'crucifying again for themselves the Son of God' (Hebrews 6:6). Believers are thus called to repentance when made aware of such rejections.