Moses brought more than 2 million Jews out of Egypt, only two out of 2 million people made it to the promised land, the rest of them died in the wilderness.
The preaching of the law may gather thousands of people, only 2 might be left standing.
You may start with 2 people with the gospel of the grace of God, those two will be turned into millions.
What killed the rest of them in the wilderness?
God was willing to bring all of them 2 millions Jews to the promised land safely; He would not have freed them from the tyranny of Pharaoh to make a mess of them in the wilderness.
They crossed the red sea with no one missing and no one hurting, Pharaoh’s hosts and chariots perished for their sake; water, manna and meat were provided without their efforts; clothes and sandals were preserved, nations and kings dreaded them.
But at the intoduction of the law; terms and conditions were established. There would no longer be total reliance on God anymore.
The condition for getting anything from God was to obey the Laws of Moses involving penalties attached when anyone defaults (Deuteronomy 28: 15 – 68)
Where there is no law, there is no sin.
Sin is the violation of the law, and death is the result of sin.
1 Corinthians 15: 56 [KJV] – The sting of death is sin; and the strength of sin is the law.
Moses brought the Law, then the law will do its job, it will minister condenation and death.
The preaching of the law may gather thousands of people, but only 2 of them might be left standing.
You may start with 2 people with the gospel of the grace of God, and before long, those 2 folks will be turned into millions.