A good Sunday school teacher is someone who has a deep knowledge of the Bible and who loves God's children. They should be able to communicate biblical truths in an interesting and engaging way, and they should also be able to relate to their students on a personal level. A good Sunday school teacher is someone who is always learning and growing in their own faith, and who is committed to helping their students grow in theirs. They should be patient, gentle, and compassionate, and they should have a heart for teaching the next generation about Jesus Christ.