How do we know Christ's power is present in preaching?

The scripture reveals that Christ holds His messengers, or stars, in His right hand, signifying His power and sovereignty. As He speaks through His preachers, He imparts the gospel's power unto salvation, which is evident in the lives changed through their ministry. The sharp two-edged sword, representing His word, pierces hearts and produces transformation, confirming that Christ's authority and power are at work through the preaching of the gospel. Therefore, the effectiveness of preaching is rooted not in the preacher's abilities but in the power of Christ who sends and empowers them.