What does Matthew 5:19 mean?

If you ignore even the smallest part of what God wants and teach others to do the same, you’ll be seen as the least important in God’s kingdom. But if you live out these things and help others do them too, you’ll be called great in God’s kingdom. Matthew 5:19 - Modern Text Bible

(Jesus is saying that every part of God’s instructions matters. How we live and what we teach others about right and wrong has real weight in God’s eyes.)