“Even if the sufficient cause has been shown a party is not entitled to the condonation of delay in question as a matter of right. The proof of a sufficient cause is a condition precedent for the exercise of the discretionary jurisdiction vested in the court by section 5. This aspect of the matter naturally introduces the consideration of all facts and it is at this stage the diligence of the party of its bona fides may fall for consideration…This was held in the case of