confirmation In Judaism, this refers to a ceremony created by the Reform movement as a way for young adults to show their decision to embrace Jewish study and reaffirm their commitment to Judaism. Confirmation is typically held at the end of the tenth grade. In Christianity, confirmation is either considered a sacrament or a rite ceremonially performed in a church. In some denominations and churches, confirmation is understood as bestowing the Holy Spirit. In others it signifies entering adulthood. In still others, it results in church membership.