1 Corinthians 3:2 I gave you milk, not solid food, for you were not yet ready for it. Indeed, you are still not ready.
As babies, we get a lot of milk and not a lot of things like steak! There is a reason for this; our bodies cannot physically cope with the digestion of meat in the beginning.
When we first learn about Christ we need to learn the basics first. If we get a mouthful of theological debate, we will probably balk at the words and go back to what we had before.
Similarly, when we tell others about Christ, we have to choose our words so they understand. Learn to start at the beginning and teach from the beginning!