The first of these texts is generally supposed[4] to be taken from the account in Exodus of the institution of the Passover, and originally it refers to the paschal lamb, which was to be eaten whole, the breaking of its bones being forbidden. St. John's idea is that Christ was to be the paschal lamb of the New Dispensation, and that therefore Providence took care that nothing should be done to destroy His resemblance to the type, as would have happened if His bones had been broken. The Passover was the great event of the year in all the generations of Jewish history. It was intended to carry the minds of God's people back to the wonderful scenes of divine grace and power in which their existence as a nation had begun, when God liberated them from their bondage and led them out of Egypt with a mighty hand. The centre of the solemnity was the slaying and eating of the paschal lamb. This reminded them of how in Egypt the blood of this lamb, sprinkled on the lintels and doorposts of their huts, saved them from the visit of the destroying angel, who was passing through the land; and how, at the same time, the flesh of the lamb was eaten by the people, with their loins girt and staves in their hands, and supplied them with strength for their adventurous journey. Thus through all ages it impressed on them two things--that the sins of the past required to be expiated, and that strength had to be obtained from above for the new stage of their history on which at the annual Passover they might be supposed to be entering. In the same way, in the New Dispensation, are our minds ever to revert to the marvellous revelation of the grace and saving power of God in which Christianity originated; and in the very midst is the Lamb slain, who is both the expiation of the sins that are past and the strength requisite for the conflict and the pilgrimage. "If we walk in the light, as He is in the light, we have fellowship one with another, and the blood of Jesus Christ His Son cleanseth us from all sin."