Introduction The Sign of the Cross is a small yet powerful prayer that holds immense significance in our faith. By invoking God's name – "In the name of the Father, and of the Son, and of the Holy Spirit" – we call upon His holy presence in our lives. This sacred gesture is a sign of protection, often accompanied by tracing the cross as a blessing. Biblical Roots The practice of calling upon God's name dates back to the early days of humanity. In Genesis 4:26, we read that people began to invoke the Lord's name. This tradition continued through the ages, with Abraham calling upon God's name in Genesis 12:8 and 13:4. Similar instances can be found throughout Scripture. Marking with the Sign of the Cross The act of marking people with the sign of the cross is also rooted in biblical history. In Ezekiel 9:4, God instructed the prophet Ezekiel to mark the foreheads of the righteous with the Hebrew letter Tav, which resembled a cross. Deep Theological Significanc...