Matthew Poole and continuators on Lamentations 3:28

28 He sitteth alone and keepeth silence, because he hath born it upon him .

Our English Annotations supplying That, makes the connexion clear, It is good for a man, that he sit alone, Ier. 15.17. not doing what he doth to be seen of men, but sitting alone, and when he is alone, suppressing the mutinies of his Spirit and keeping his soul in subjection to God, because God hath humbled him by his Rod, humbling himself to his Will.