The exportation of chariots and war-horses from Egypt to Syria, which the Pharaoh no doubt permitted in an especial degree to his son-in-law, Solomon carried on by means of merchants commissioned by him.[349] Another trade undertaking, at once much more far-seeing, and promising far greater gains, he commenced in union with the king of Tyre. It was of great importance to the Phenicians to obtain an easier connection with South Arabia in the place of, or at least in addition to, the dangerous and very uncertain caravan routes past Damascus and Dumah (I. 320), or past Elath along the coast of the Red Sea, to South Arabia. The circuit by Babylon was very distant, and not much more secure. The rule of Solomon over Edom pointed out the way, and secured the possibility of reaching South Arabia by the Red Sea. At Eziongeber, near Elath, Tyrian shipbuilders built the vessels which were to explore the coasts of South Arabia, the coasts of the land of gold. Guided by Phenician pilots, Phenicians and Israelites sailed into the unknown sea, and to unknown and remote corners of the earth. They succeeded not only in reaching the South Arabian coasts and the coasts of East Africa, but in passing beyond to Ophir, _i.e._, as it seems, to the mouths of the Indus. After an absence of three years the first expedition brought back gold in quantities, silver, ivory, sandal wood, precious stones, apes and peacocks. The profits of this expedition are said to have contributed as Solomon's share 420 Kikkars of gold, _i.e._ towards 20,000,000 thalers (about £3,000,000).[350] With the increased sale of the products of the country, the improvement and security of the great routes of traffic, the entrance of Israel into the trade of the Phenicians, and the influx of a considerable amount of capital, money seems to have become very rapidly and seriously depreciated in price in Israel. Before the establishment of the monarchy a priest is said to have received 10 silver shekels, with food and clothing, for his yearly service at a sacred place.[351] The amount from which Abimelech is said to have maintained his retinue (p. 107) is placed at only 70 shekels of silver. Before the epoch of the monarchy the prophet received a quarter of a shekel as a return for his services. David purchased the threshing-floor of Araunah at Zion with two oxen for 50 shekels of silver.[352] On the other hand, Solomon appears to have paid the keepers of his vineyards a yearly salary of 200 silver shekels, and in his time 150 shekels were paid for an Egyptian horse, and 600 shekels (500 thalers = £80) for a war-chariot.[353]