His Miraculous Conception.
The very idea of having a human mother, but without a human father, is Jesus Christ's miraculous conception in the Virgin Mary's womb. "Now the birth of Jesus Christ was on this wise: When as His mother Mary was espoused to Joseph, before they came together, she was found with child of the Holy Ghost" (Matthew 1:18). Though the angel Gabriel explained the general idea of Mary's miraculous conception of Jesus, i.e., "The Holy Ghost shall come upon thee, and the Power of the Highest shall overshadow thee: therefore also that Holy Thing which shall be born of thee shall be called the Son of God" (Luke 1:35), any more explanation than that would be impossible for the human mind to fathom. "And, behold, thou shalt conceive in thy womb, and bring forth a Son, and shalt call His name JESUS" (Luke 1:31).