The church puts notable emphasis on the family, and the distinctive concept of a united family which lives and progresses forever is at the core of Latter-day Saint doctrine. Church members are encouraged to marry and have children, and as a result, Latter-day Saint families tend to be larger than average. All sexual activity outside of marriage is considered a serious sin. All homosexual activity is considered sinful and same-sex marriages are not performed or supported by the LDS Church. Latter-day Saint fathers who hold the priesthood typically name and bless their children shortly after birth to formally give the child a name and generate a church record for them.