Were Not Illegitimate Children

In verse 31, to the jews who had believed in him, jesus said, if you hold to my teaching, you are really my disciples, then you will know the truth. They answered him, we are abraham's descendants and have never been slaves of any one. How can you say that you shall, we shall be set free? Jesus replied, every one who sins is a slave to sin. To distrust his testimony is not only to oppose jesus, but also to oppose the father who testifies of that testimony. If i am telling the truth, why don't you believe me? Whoever belongs to god hears what god says. The reason you do not