The alteration of the time of keeping the passover from the thirteenth day of the first month to the same day of the second was in accordance with the liberty granted in Numbers ix. 10, 11, to persons unclean by contact with a dead body or 'in a journey afar off.' The decision to have the passover was not taken in time to allow of the necessary removal of uncleanness from the priests nor of the assembling of the people, and therefore the permission to defer it for a month was taken advantage of, in order to allow full time for the despatch of the messengers and the journeys of the farthest northern tribes. It is to be observed that Hezekiah took his subjects into counsel, since the step intended was much too great for him to venture on of his own mere motion. So the overtures went out clothed with the authority of the whole kingdom of Judah. It was the voice of a nation that sought to woo back the secessionists.
The messengers were instructed to supplement the official letters of invitation with earnest entreaties as from the king, of which the gist is given in verses 6-9. With the skill born of intense desire to draw the long-parted kingdoms together, the message touches on ancestral memories, recent bitter experiences, yearnings for the captive kinsfolk, the instinct of self-preservation, and rises at last into the clear light of full faith in, and insight into, God's infinite heart of pardoning pity.
Note the very first words, 'Ye children of Israel,' and consider the effect of this frank recognition of the northern kingdom as part of the undivided Israel. Such recognition might have been misunderstood or spurned when Samaria was gay and prosperous; but when its palaces were desolate, the effect of the old name, recalling happier days, must have been as if the elder brother had come out from the father's house and entreated the prodigal to come back to his place at the fireside. The battle would be more than half won if the appeal that was couched in the very name of Israel was heeded.
Note further how firmly and yet lovingly the sin of the northern kingdom is touched on. The name of Jehovah as the God of Abraham, Isaac, and Israel, recalls the ancient days when the undivided people worshipped Him, and the still more ancient, and, to hearers and speakers alike, more sacred, days when the patriarchs received wondrous tokens that He was their God, and they were His people; while the recurrence of 'Israel' as the name of Jacob adds force to its previous use as the name of all His descendants. The possible rejection of the invitation, on the ground which the men of the north, like the Samaritan woman, might have taken, that they were true to their fathers' worship, is cut away by the reminder that that worship was an innovation, since the fathers of the present generation had been apostate from the God of _their_ fathers. The appeal to antiquity often lands men in a bog because it is not carried far enough back. 'The fathers' may lead astray, but if the antiquity to which we appeal is that of which the New Testament is the record, the more conservative we are, the nearer the truth shall we be.
Again, the message touched on a chord that might easily have given a jarring note; namely, the misfortunes of the kingdom. But it was done with so delicate a hand, and so entirely without a trace of rejoicing in a neighbour's calamities, that no susceptibilities could be ruffled, while yet the solemn lesson is unfalteringly pointed. 'He gave them up to desolation, as ye see.' Behind Assyria was Jehovah, and Israel's fall was not wholly explained by the disparity between its strength and the conquerors'. Under and through the play of criminal ambition, cruelty, and earthly politics, the unseen Hand wrought; and the teaching of all the Old Testament history is condensed into that one sad sentence, which points to facts as plain as tragical. In deepest truth it applies to each of us; for, if we trespass against God, we draw down evil on our heads with both hands, and shall find that sin brings the worst desolation--that which sheds gloom over a godless soul.