Gospel in the Old Testament
The Bible is clear that people in the Old Testament as well heard the gospel of Jesus. The Apostle Paul says, Abraham heard the Gospel directly from God who was his preacher. Galatians 3:8 “And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham”. And Jesus adds, “Abraham rejoiced to see my day: and he saw it, and was glad.” (John 8:56)
How did God teach the way of salvation to the Old Testament people? It was through types and symbols that were vivid and in detail.
To Adam and Eve God revealed the death of the coming Messiah when He made the first garments for them—the garments of skin.
Genesis 3:21, “Unto Adam also and to his wife did the LORD God make coats of skins, and clothed them.”
God did not clothe them with fur of some animal, but with skin! You can take the fur of an animal out without killing it, but to take its skin away, the animal has to die, it has to be killed. The blood has to be spilt. So in the first preaching of the gospel in symbolism God showed them that someone innocent would die for them—someone would shed blood for their sins.
The symbolism starts of as a little seed in the Garden of Eden that grew into a big tree in the wilderness when God brought out His nation from Egypt and gave them the sanctuary details that contained amazing truths of the plan of Salvation that would be manifested in the life of Jesus. As Adam and Eve were the first couple on earth that received the gospel seed in symbolism, nation Israel that received the complete details of the full grown tree in symbolism, was the first born of God. Exodus 4:22 “Thus saith the LORD, Israel is my son, even my firstborn”.