According to Heb. 11:4, Abel’s offering, a sacrifice, was offered to God by faith. Faith comes by hearing the word of the gospel (14, Rom. 10:17). This indicates that Abel’s parents, Adam and Eve, must have proclaimed to their children the glad tidings that God had announced to them (Gen. 3:15, 21). Like his father and mother, Abel believed the gospel and presented his offering to God according to God’s revelation in the word proclaimed by his parents. Thus, the first family on earth was a family of the gospel, a family of believers.
Abel was the first priest of God, representing all the believers in Christ (1 Pet. 2:5, 9). In type, Abel offered Christ to God. According to Num. 18:17, the firstling of a cow or sheep or goat, a type of Christ, had to be offered to God. This offering included the sprinkling of the blood upon the altar for redemption and the burning of the fat as a satisfying fragrance to God. Hence, Abel’s offering, corresponding exactly with what was later revealed in the Mosaic law, proves that his way of worshipping God was according to God’s divine revelation, not according to his own concept.