Everything about our divine Lord is holy, including His Name. It was the Archangel Gabriel who first spoke the name of Jesus to His mother, “Behold, you will conceive in your womb and bear a son, and you shall name him Jesus” (Luke 1:31). The Archangel was only a messenger, so the name of Jesus was given to Him by the Father in Heaven.
Saint Peter was one of the first Apostles to speak with authority in the Holy Name of Jesus when he healed a crippled man saying, “I have neither silver nor gold, but what I do have I give you: in the name of Jesus Christ the Nazorean, rise and walk” (Acts 3:6). Saint Paul also exalted the holy name of Jesus when he said, “…at the name of Jesus every knee should bend, of those in heaven and on earth and under the earth, and every tongue confess that Jesus Christ is Lord, to the glory of God the Father” (Philippians 2:9–10). Saint Paul preached with power in the name of Jesus so often that even some itinerant Jewish exorcists tried to imitate him by commanding demons, “I adjure you by the Jesus whom Paul preaches” (Acts 19:13).
Throughout the history of the Church, Jesus’ name has been invoked as an instrument of personal faith in the Son of God, especially to command demons or simply to pray to Jesus in a repetitive and personal way. The liturgical Feast of the Most Holy Name of Jesus has been celebrated by the Church for many centuries, especially within various religious orders. In the fifteenth century, Saint Bernardine of Siena, a Franciscan friar, went on a preaching mission promoting devotion to the Most Holy Name. He encouraged people to revere Jesus’ name by placing the first three Greek letters of His name on their doors: IHS.
Today, this Greek monogram of Jesus’ name is commonly seen in churches on tabernacles, altars, and in stained glass windows. In the sixteenth century, Saint Ignatius of Loyola had such a strong devotion to the Most Holy Name of Jesus that he adopted it as his seal as general of his newly founded order of the Jesuits; that monogram remains the Jesuits’ official seal today.
There is great power in the spoken name of Jesus. Repeating His name prayerfully or speaking it aloud brings Him close and gives you strength, provided you recite His name in faith. The name of Jesus casts out fear, arouses trust, and unites your heart to His. Sadly, the Most Holy Name of Jesus is so holy that the evil one often tempts people to invoke it as a curse when angry, without even considering what they are doing.
Source: https://mycatholic.life/saints/saints-of-the-liturgical-year/january-3-the-most-holy-name-of-jesus/
