The coming Kingdom of God was His core message.
The common man and the gentiles liked Jesus and his teaching.
When he got his bachlors in teaching
Jesus' style of teaching was often through parables, using simple stories or analogies to convey deeper spiritual truths. He also used direct questions and discussions to engage with his listeners and provoke deeper thought and self-reflection. Additionally, he emphasized love, compassion, and forgiveness in his teachings, encouraging his followers to live with faith and humility.
i don't need your Jesus
Because what He was teaching was true.
Jesus main teaching about God's Kingdom.
Jesus quoted Isaiah 56:7 and Jeremiah 7:11 while cleansing the temple. He referred to Isaiah when he said, "My house shall be called a house of prayer," and to Jeremiah when he said, "But you have made it a den of robbers."
Jesus lived and died as a Jew. Thus, he used the Hebrew Bible (often called the Old Testament by Christians), and he frequently quoted from it. It should be noted that Jesus left no writings, so we only have what his followers wrote about him many decades after he died; but as a Jew and as a teacher of religion, Jesus was well-acquainted with the Hebrew Scriptures.
Scripture contains no record of Jesus teaching about colors.
Christianity
oral
No I think teaching by parables was a common way of teaching then.