This is a common question people have. The answer lies in the Old Testament, at least what was the age of accountability. In Exodus 30:14 and 38:26, it says all men twenty and above shall make an offering to the Lord. In Numbers chapter one, all males from twenty and upward and were healthy were to be gathered for war. In Numbers 14:29 lies the most convincing evidence that twenty was the accountable age. Those who were twenty and above who murmured against God were held accountable and would die off in the wilderness instead of entering the land He promised to their fathers Abraham, Isaac, and Jacob. Has He increased the age of accountability since many twenty year olds seem like children? Who knows? I wouldn’t count on it.