The presence of the Amorites on the eastern side of Jordan is accounted for in a passage extending from vv. 26-30. Moab had apparently, as at a later time referred to by one of the prophets, been at ease, resting securely behind her mountain rampart. Suddenly the Amorite warriors, crossing the ford of Jordan and pressing up the defile, had attacked and taken Heshbon; and with the loss of that fortress Moab was practically defenceless. Field by field the old inhabitants had been driven back, out into the desert, southward beyond the Arnon. Even as far as Ar itself the victors had carried fire and sword. Retiring, they left all south of the Arnon to the Moabites, and themselves occupied the country from Arnon to Jabbok, a stretch of sixty miles. The song of vv. 27-30 commemorates this ancient war:—
"Come ye to Heshbon,
Let the city of Sihon be built and established;
For a fire is gone out of Heshbon,
A flame from the city of Sihon:
It hath devoured Ar of Moab,
The Lords of the High Places of Arnon.
Woe to thee, Moab!
Thou art undone, O people of Chemosh."
The chant rejoicing over the defeated goes on to tell how the sons of Moab fled, and her daughters were taken captive; how the arms of the Amorite were victorious from Heshbon to Dibon, over Nophah and Medeba. The Israelites arriving soon after this sanguinary conflict, found the conquered region immediately beyond the Arnon open to their advance. The Amorites had not yet occupied the whole of the land; their power was concentrated about Heshbon, which according to the song had been rebuilt.
The request made of Sihon to allow the passage of a people on its way to Jordan and the country beyond came possibly at a time when the Amorites were scarcely prepared for resistance. They had been successful, but their forces were insufficient for the large district they had taken, larger considerably than that on the other side of Jordan from which they had migrated. In the circumstances Sihon would not grant the request. These Israelites were bent on establishing themselves as rivals: the answer accordingly was a refusal, and war began. Refreshed by the spoil of the fields of Arnon, and now almost within sight of Canaan, the Hebrew fighting men were full of ardour. The conflict was sharp and decisive. Apparently in a single battle the power of Sihon was broken. Leaving his fortress the Amorite chief had gone out against Israel "into the wilderness"; and at Jahaz the fight went against him. From Arnon to Jabbok his land lay open to the conquerors.
And having once tasted success the warriors of Israel did not sheathe their swords. The fortress of Amman guarded the land of the Ammonites so strongly that it seemed for the time perilous to strike in that direction. Crossing the valley of the Jabbok, however, and leaving the fierce Ammonites unattacked, the Israelites had Bashan before them; a fertile region of innumerable streams, populous, and with many strongholds and cities. There was hesitation for a time, but the oracle of Jehovah reassured the army. Og the king of Bashan waited the attack at Edrei in the north of his kingdom, about forty miles east from the Sea of Galilee. Israel was again victorious. The king of Bashan, his sons, and his army were cut to pieces.
Such was the rapid success the Israelites had in their first campaign, amazing enough, though partly explained by the strifes and wars which had reduced the strength of the peoples they attacked. We must not suppose, however, that though the Amorites and the people of Bashan were defeated, their lands were occupied or could be occupied at once. What had been done was rather in the way of defending the passage of the Jordan than providing a settlement for any of the tribes. When the Reubenites, Gadites, and Manassites came to dwell in those districts east of the Jordan, they had to make good their ground against the old inhabitants who remained.
The army had passed into the north, but the main body of the people descended from the neighbourhood of Heshbon by a pass leading to the Jordan Valley. The return of the victorious troops after a few months gave them the assurance that at last they could safely prepare for the long expected entrance into the Land of Promise.
Suffering and the discipline of the wilderness had educated the Israelites for the day of action. By what a long and tedious journey they reached their success! Behind them, yet with them still, was Sinai, whose lightnings and awful voices made them aware of the power of Jehovah into covenant with whom they entered, whose law they received. As a people bound solemnly to the unseen Almighty God they left that mountain and journeyed towards Kadesh. But the covenant had neither been thoroughly accepted nor thoroughly understood. They began their march from the mountain of the Lord as the people of Jehovah, yet expecting that He was to do all for them, require little at their hands. The other side of privilege, the duty they owed to God, had to be impressed by many a painful chastisement, by the sorrows and disasters of the way. Wonderfully, all things considered, had they sped, though their murmurings were the sign of an ignorant rebellious temper which was incompatible with any moral progress. By the long delay in the wilderness of Kadesh that disposition had to be cured. In a region not fertile like Canaan itself, yet capable of supporting the tribes, they had to forget Egypt, realise that forward not backward was their only way, that while desert after desert intervened now between them and Goshen, they were within a day's march of the Promised Land. But even this was not enough. Perhaps they might have crept gradually northward; shifting their headquarters a few miles at a time till they had taken possession of the Negeb and made a settlement of some kind in Canaan. But if they had done so, as a nation of shepherds, advancing timorously, not boldly, they would have had no strength at the opening of their career. And it was decreed that by another door, in another spirit, they should enter. Edom refused them access to the east country. They had again to gird up their loins for a long journey. And that last terrible march was the discipline they required. Resolutely kept to it by their leader, on through the Arabah, across the desert, to the "Heaps of the Outlands towards the sunrising" they went, with new need for courage, a new call to endure hardness every day. Did they faint once, and turn murmurers again? The serpents stung them in judgment, and the cure was provided in grace. They learned once more that it was One they could not elude with whom they had to do, One who could be severe and also kind, who could strike and also save. Decimated, but knit together as they had never been, the tribes reached the Arnon. And then, the first trial of their arms made, they knew themselves a conquering people, a people with power, a people with a destiny.
It is so in the making of manhood, in the discipline of the soul. Sinai, and the awful declarations of duty and of the Divine claim there, must enter into our life; it would be light, frivolous, and incapable otherwise. But the revelation of power and righteousness does not insure our submission to the power, our conformity to the righteousness. Divine words have to be followed by Divine deeds; we have to learn that in God's kingdom there is to be no murmuring, no shrinking even from death, no turning back. It is a lesson that tries the generations. How many will not learn it! In society, in the Church, the rebellious spirit is shown and has to be corrected. At the "Graves of Lust," at the "Place of Burning," murmurers are judged, those who refuse God's way fall and are left behind. And when the Land of Promise is in sight possession of it shall not be easily obtained by those who are still half-wedded to the old life, distrustful of the righteousness of God and His demand on the whole love and service of the soul. There is indeed no heaven for those who look back, who even if angels were to hurry them on would still lament the losses of this life as irremediable. There must be the courage of the daring soul that adventures all on faith, on the Divine promise, on the eternity of the spiritual.