The power (dunamis) of true God-fearing (godliness) is the work of the Spirit: Regenerating, illumining and leading to Christ alone by begetting life and granting faith to believe on Christ. Many profess to believe on Christ, and yet attribute the power of believing to their own will thereby denying (speaking against) the ONLY power of salvation, which is the will of the Father, the finished work of Christ, and the revelation of the Spirit- John 1:11-12. Seeing Christ in truth and the consequent worship in truth is through the revelation of the Spirit of God, and not a mere intellectual embracing of truth and doctrine. As to the work of Christ, there are those who deny the power and efficacy of His righteousness imputed at the cross, His sacrifice, and His intercession, Romans 8:10. They deny the power of the cross and what Christ accomplished there by the imputation of sin to Him, and the charging of the merits of His obedience to His people as the only sufficient and necessary righteousness for acceptance with God. Like Cain, they endeavor to add to that finished work, and bring the fruit of their own hands- whether it be their will, decision, faith, or good works, and hope for acceptance by offering it on the altar of worship, as an added righteousness that they falsely presume that God will accept.