seal

227. What is the sacramental character?
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It is a spiritual “seal” bestowed by the sacraments of Baptism, Confirmation, and Holy Orders. It is a promise and guarantee of divine protection. By virtue of this seal the Christian is configured to Christ, participates in a variety of ways in his priesthood and takes his part in the Church according to different states and functions. He is, therefore, set apart for divine worship and the service of the Church. Because this character is indelible the sacraments that impress it on the soul are received only once in life.