What a strange contrast, and yet what a close analogy there is between the victorious tones and martial air of this summons of my text. 'Lift up your heads, O ye gates! that the King of Glory may come in,' and the gentle words of the Apocalypse: 'Behold, I stand at the door and knock; if any man hear My voice and open the door, I will come in to him.' But He that in the Old Covenant arrayed in warrior arms, summoned the rebels to surrender, is the same as He who, in the New, with the night-dews in His hair, and patience on His face, and gentleness in the touch of His hand upon the door, waits to enter in. Brethren! open your hearts, 'and the King of Glory shall come in.' And He will come in as a king that might seek to enter some city far away on the outposts of his kingdom, besieged by his enemies. If the King comes in, the city will be impregnable. If you open your hearts for Him He will come and keep you from all your foes and give you the victory over them all. So, to every hard-pressed heart, waging an unequal contest with toils and temptations, and sorrows and sins, this great hope is given, that Christ the Victor will come in His power to garrison heart and mind. As of old the encouragement was given to Hezekiah in his hour of peril, when the might of Sennacherib insolently threatened Jerusalem, so the same stirring assurances are given to each who admits Christ's succours to his heart--'He shall not come into this city, for I will defend this city to save it for Mine own sake' Open your hearts and the conquering King will come in.