'Rigour' in the Bible

and the Egyptians cause the sons of Israel to serve with rigour,

and make their lives bitter in hard service, in clay, and in brick, and in every kind of service in the field; all their service in which they have served is with rigour.

thou rulest not over him with rigour, and thou hast been afraid of thy God.

and ye have taken them for inheritance to your sons after you, to occupy for a possession; to the age ye lay service upon them, but upon your brethren, the sons of Israel, one with another, thou dost not rule over him with rigour.

as an hireling, year by year, he is with him, and he doth not rule him with rigour before thine eyes.

The weak ye have not strengthened, And the sick one ye have not healed, And the broken ye have not bound up, And the driven away have not brought back, And the lost ye have not sought, And with might ye have ruled them and with rigour.