The sermon explores the biblical mandate for believers to be called by name and equipped by the Holy Spirit for specific ministry. Drawing primarily from Exodus 31, it distinguishes between the internal call of God and the external affirmation of the local church, warning against self-appointed ministries. The preacher emphasizes that true effectiveness requires both an experiential encounter with God's holiness and continuous filling with His Word and power. This divine equipping provides the wisdom and skill necessary to fulfill God's commands, ensuring that all work glorifies Him rather than relying on human effort or worldly success.