Overview
The Holy Spirit can be offended through various means: blasphemy or rejection of His work, deliberate resistance to His conviction, and intentional suppression of His influence in our lives. Such offences represent a hardening of the heart against God's gracious work and stand in direct opposition to His redemptive purposes.
Key Scriptures
"Therefore I tell you, every kind of sin and slander can be forgiven, but blasphemy against the Spirit will not be forgiven" (Matthew 12:31, NIV). "And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption" (Ephesians 4:30, ESV). "Do not quench the Spirit" (1 Thessalonians 5:19, NASB). "You stiff-necked people! Your hearts and your ears are still uncircumcised. You are just like your ancestors: You always resist the Holy Spirit!" (Acts 7:51, NIV).
Application
Believers should cultivate sensitivity to the Holy Spirit's promptings, promptly repent of resistance to His work, and guard against the hardness of heart that characterizes those who persistently reject His conviction and guidance.