In the scriptures you will also find statements that point out how words are extremely powerful and can destroy the world itself. But if you were to break a heart by venomous words, it would not be possible to ever make it whole again.
Words can cause endless troubles and they can also give boundless joy.
Therefore, you should be most careful that the words you use do not hurt or give pain to others. If you were to physically slip and fall there might be some small injury that could cause you some inconvenience for a while. But there would not be any grave consequences resulting from this in the long term. There might only have been a small wound, which you can get easily dressed, and which would soon heal. But if your tongue were to slip and you were to hurt the mind or the heart of another person with harsh words, it would create a wound in that person which could not be cured by any doctor in the world.