4:4 "fat thereof" A burnt offering, Leviticus 3:16
The two sons had been instructed in the Levitical service, for "faith comes by
hearing". Romans 10:17 God
accepted the offering by fire from heaven.
Hebrews 11:4 Abel stands for
all those who receive the Lamb of God as their substitute.
The new covenant: "Present your bodies a living sacrifice."
Acts 2: fire from heaven.