When we are aligned to the will and purpose of God and we allow our being to be led by the Holy Spirit, we would never think of doing bad to anyone because the Holy Spirit would never teach us such. Part of what it teaches is how to do good to people.
Luke 6:31
And as ye would that men should do to you, do ye also to them likewise.
Whatever we do to people or whichever way we act towards them we also attract it to ourselves. Our lives should be nothing less of the reflection of God's love and kindness. If we have Christ in us then it should reject and one of the ways it is been revealed is by how we treat others.
It won't be good if we are professing Christ but then our lives are showing something different all together. It should be in synchrony with our confession. Our deeds should speak for us and they should be of good report.