King James Version
I behaved myself as though he had been my friend or brother: I bowed down heavily, as one that mourneth for his mother.English Standard Version
I went about as though I grieved for my friend or my brother; as one who laments his mother, I bowed down in mourning.New International Version
I went about mourning as though for my friend or brother. I bowed my head in grief as though weeping for my mother.