"At the name of Jesus every knee should bow, of those that are in heaven, on earth and under the earth" (Phil 2:10)
 

Have you ever seen the letters "IHS" in church? It is an abbreviation for the name of Jesus. IHC is the abbreviation of the Greek ΙΗΣΟUΣ, i.e., Jesus (the first three letters of the word). The older form for the Greek sigma, S, resembled our capital C. According to catholicculture.org, the abbreviation owes its spread to St. Bernardine of Siena, who had it placed on his banner, surrounded with twelve rays of the sun and surmounted by a cross. It soon became the most popular monogram for the holy Name of Jesus. By his fervent words St. Bernardine persuaded many priests to place the letters on altars or on the interior and exterior walls of churches. Many Italian cities responded to his efforts and put the monogram in large letters on the outer walls of their town halls, as may still be seen in Siena.