“The Lord sees that a baptized infant can now enter the Kingdom of God, but if left to live, will become a robber.  Here is a well-known story:  An angel took an infant’s life.  A certain monk wanted to know God’s Judgment; it was revealed to him that in time, the child would have grown up to be the leader of a gang of thieves, but that now he would enter the Kingdom of God.  “
(Fr Daniel Sysoyev+ on why some infants die)