Yes, Christian parents should teach their children to marry at a young age with another Christian.
Forming a Christian family will ground your child in the Christian faith.
Your child can have a Christian spouse who encourages in the Christian faith so that both of them can grow in the Christian faith.
Marying young will also encourage your child to remain holy before the sight of God.
God does not want your child to be sexually promiscuous or have sex before marriage.
By marrying young, your child can have sex with the Christian marriage partner and glorify God.