““John said, “The Word became flesh and made his dwelling among us” (John 1:14). John was particularly emphatic on this matter in his first letter, one of the purposes of which was to combat a heresy that denied that Jesus had been genuinely human: “Every spirit that acknowledges that Jesus Christ has come in the flesh is from God, but every spirit that does not acknowledge Jesus is not from God” (1 John 4:2–3).””