G2904, krátos, is a Greek noun for strength, effective might, prevailing power, or dominion. The New Testament uses it when power is displayed in a mighty act, made effective in a result, confessed as enduring rule, or attributed to God and the Lamb in praise. Mary sings that God has acted with might through His arm. Acts describes the Lord's word spreading and prevailing. Paul joins krátos with other power terms to speak of God's strength working in Christ's resurrection and supplying believers for faithful endurance. The word is not a secret technical formula, and its meaning must be read through each sentence and its neighboring terms.
The passages place divine might in movements the church might overlook. Ephesians directs attention to the power that raised and exalted Christ, then commands believers to receive strength in the Lord as they put on God's armor of truth, righteousness, gospel readiness, faith, salvation, and the word. Colossians connects glorious might with endurance, patience, and joy rather than with spectacle or personal dominance. First Peter places service inside dependence on what God supplies and then gives glory and power to Jesus Christ. These uses make effective might neither human self-assertion nor spiritual performance. God's power sustains holy perseverance and redirects honor to its giver.
Hebrews also uses krátos for the devil's power of death, but the verse announces that the incarnate Son destroys the one wielding it through His own death. This is real hostile power, not independent sovereignty or an equal opposite to God. Doxologies in the Pastoral Epistles, Peter, Jude, and Revelation ascribe everlasting dominion to God and to the Lamb. Pastoral teaching should therefore distinguish power possessed, power exercised, authority granted, and dominion praised without claiming sharper lexical walls than the texts support. The central Christian confession is not that believers become impressive. It is that God's effective might is known in the risen Christ, defeats the tyrant through the cross, preserves saints in patient faithfulness, advances the word, and belongs forever to God.
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