When the Preacher or Teacher points every jot and tittle of the Word of God to Calvary the Word of God becomes alive with POWER; Why? Because the life is in the BLOOD. Without the BLOOD, the Word means nothing (1 Cor.1:18, Lev. 17:11, Gal. 5:4). Therefore, preaching and teaching Christ Crucified, the Word becomes alive with Power:
Hebrews 4:12
“For the Word of God is quick (alive), and powerful (active, energizing), and sharper than any two-edged sword (refers to the ability of the Word of God to “probe”), piercing even to the dividing asunder of soul and spirit, and of the joints and marrow (doesn’t mean the dividing asunder of soul from spirit or joints from marrow, but rather that the Word of God pierces the soul and the spirit, adequately proclaiming what man ought to be and can only be in Christ; as well, the Word of God portrays to us the Holy Spirit and His Power, and proclaims the fact that He Alone can “quicken our mortal bodies” [Rom. 8:11], which refers to giving us power to yield this physical body to that which is Righteous [Rom. 6:12-13]), and is a discerner of the thoughts and intents of the heart (carries the idea of “sifting out and analyzing evidence”).”
If the Word doesn't point to Calvary it has no power (a form of godliness - denying the TRUE POWER). Matthew 7:14, John 15:5