Ephesians 4:4-6 KJV, which states, "There is one body, and one Spirit, even as ye are called in one hope of your calling; One Lord, one faith, one baptism, One God and Father of all, who is above all, and through all, and in you all," speaks of a spiritual baptism, specifically the baptism of the Holy Ghost.
The passage emphasizes the unity of believers in Christ, highlighting the shared experiences and beliefs that bind them together. It mentions "one body," referring to the church as the collective body of Christ, and "one Spirit," referring to the Holy Spirit who resides in and empowers all believers.
The "one faith" refers to the singular belief system that unites Christians, centered on the core tenets of Jesus Christ's life, death, and resurrection. The "one baptism" is often interpreted as the baptism of the Holy Ghost, which signifies the spiritual cleansing and empowerment by the Holy Spirit upon salvation.
The passage concludes by affirming the sovereignty of God, the Father of all, who is above all, through all, and in all believers. This reinforces the idea that the spiritual baptism, or the baptism of the Holy Ghost, is a divine act that connects believers to God and to one another.
In summary, Ephesians 4:4-6 KJV speaks of the spiritual baptism, the baptism of the Holy Ghost, which signifies the cleansing, empowerment, and unity of believers in Christ. It emphasizes the shared experiences and beliefs that bind them together under the guidance of the Holy Spirit and the sovereignty of God.