What would happen if the confirmation candidate received the sacrament while not in the state of grace?

If a confirmation candidate receives the sacrament while not in a state of grace, they may not fully benefit from the graces associated with the sacrament. The sacrament of Confirmation strengthens one's relationship with the Holy Spirit and the Church, but being in a state of mortal sin can impede that grace. The Church teaches that individuals should seek reconciliation through confession before receiving the sacraments to ensure they are spiritually prepared. Ultimately, receiving Confirmation under these circumstances does not invalidate the sacrament, but it may hinder the effectiveness of its grace in the individual’s life.