Deuteronomy 10:1-5 KJB
God spoke the Ten Commandments to His people out of His fiery wrath against evil because He has the right to kill anyone with His fiery wrath who breaks His Law and refuses to repent. Deuteronomy 19:16-25; Deuteronomy 20:1 (KJB). While Moses was at the top of the mountain receiving the Ten Commandments written on tables of stone by the finger of God, some of the Israelites pressured Aaron to make a golden calf which they began to worship although they already knew the first two Commandments. When Moses came down from the mountain and saw their wickedness, God had him to throw down the tables of stone and literally break the Ten Commandments. But God also had Moses to use His fiery wrath against evil to melt the golden calf, grind it to powder, spread it on the water, and he made the people to drink that water to demonstrate to them that their evil had poisoned their souls and spirits. Moses then called the Levites to him who had remained loyal to the Lord, and he ordered them to go through the camp and kill with their swords the three thousand men who demonstrated that they refused to repent because they remained naked. Exodus 32:15-28 (KJB). But Moses did not have his brother Aaron killed because Moses knew that Aaron would repent and be used of God in the future.
But the third time that God gave the Israelites His Ten Commandments, He had Moses to carve out two tables of stone and bring them to the top of the mountain where God again wrote His Ten Commandments. Moses had to repair what he had broken. God had Moses to bring the tables of stone down from the mountain and put them into the Ark of the Covenant with the Mercy Seat on top so that the Israelites would carry the Ten Commandments wherever they journeyed. This time, Moses saw no rebellion among the Israelites, and the Ten Commandments being inside the Ark of the Covenant with the Mercy Seat carried by the priests wherever the Israelites went symbolized to the people that God would forgive them whenever they broke the Ten Commandments if they would appeal to His mercy by bringing a clean animal to the priests who would sacrifice it as a sin offering or a burnt offering to show their faith in God. Deuteronomy 10:1-5; Leviticus 5:5-10 (KJB).
But all of this put together demonstrated that God's people at that time could have had only a very limited understanding of God's Love and mercy. To them, faith meant much the same as obedience. Simply rely on the priests to make the sin offering or the burnt offering, and God would forgive. No doubt, Moses had already taught them that God creates humans in His image to be good and righteous, but the evil nature of every human would cause them to commit sinful and even evil acts. Genesis 1:26-27; Genesis 1:31; Genesis 4:1-8 (KJB). The ancient Israelites could therefore have had no understanding that the sin offering and the burnt offering symbolized that their Messiah would be a suffering Messiah who would suffer in their place their sins, evil, and the eternal death that sin and evil causes so that He could save them from eternal death forever. To this day, most Jews reject the fact that their Messiah could be a suffering Messiah.
Two of God's prophets, king David and Isaiah, wrote perfect descriptions of how the Messiah would suffer for the sins and evil of not only the Jews, but for all of humanity. Psalm 22:1-21; Isaiah 53:1-12 (KJB). But although these prophets faithfully wrote that which the Holy Spirit told them to write, they never displayed that they had any deep understanding of what they wrote. Some Old Testament writers had some ideas about salvation by grace, but only God could have known that the ancient Israelites could have had no idea that a suffering Messiah would be able to give repentant humans His own perfect righteousness that would save them by His grace. II Corinthians 5:21 (KJB). For these reasons, whenever God had the Old Testament writers to write about human righteousness, He had to have meant the righteousness that He creates humans to be. Genesis 1:26-27; Genesis 1:31 (KJB). Since God can never lose anything He has ever created, then God will save and preserve His created human righteousness forever because He will cause all humans not already saved by grace to repent and believe in Him as the Lamb of God their suffering Messiah. Psalm 111:7-8; Psalm 112:1-10; Psalm 36:6; Psalm 50:23; Luke 3:6; I Timothy 4:10 (KJB). Christ will visit all of His living humans "on the earth, and under the earth" in the end of the world, and He will cause them all to repent and return to faith in Him as the Lamb of God their Savior so that He can recreate them with new bodies to live forever on His recreated earth. This will be a lesser form of salvation than that of grace. Christ will cast their separated dead and evil natures into the eternal lake of fire. Revelation 5:11-14; Philippians 2:9-11; Revelation 20:5; Revelation 20:11-15; Revelation 21:1-5; John 5:28-29; II Peter 3:9-13; I Corinthians 15:20-26; II Timothy 1:10; Revelation 1:17-18; Revelation 22:11-12 (KJB).