On 19 December 1644 the first Self-Denying Ordinance was approved by the House of Commons. This proposed that all members of the House of Commons and the House of Lords be barred from exercising military commands. This was rejected by the Lords on 13 January 1645. However, on 21 January the Commons passed the New Model Ordinance. This was a proposal to create a united Parliamentary army. It was approved by the Lords on 15 February. Over a month of negotiations ensued between the Commons and the Lords concerning who was going to command this army.