Fifty, 5x10, combines the two thoughts of responsibility in respect of both God and man.
So the veil (Christ) is hung in the Tabernacle under the 50 taches of gold; for, to bring us to God by His flesh through death (rent), He must stand under the weight of every responsibility and bear all.
Abraham begins his petitions by asking if "fifty righteous" be in the city. Is not the true character of righteousness in such a combination of 5 and 10?
At the age of 50, the Levites ceased to serve, their responsibilities being now filled up (Num. 8:24-26).
Every 50th year was the Jubilee, when all responsibilities of possessions were reinstated and cleared (Lev. 25:10).
Fifty days were to be reckoned from waving the first sheaf of harvest (the morrow after the seventh Sabbath) to the presentation of the wave loaves (Lev. 23:15-16). Christ having ascended forty days after resurrection, ten days more when Pentecost was fully come, He gave the promise of the Father (the Holy Ghost) and the church was formed. The full responsibility of this is seen in the Spirit's power at the end of 50 days after resurrection.
In 2 Kings 2:7 50 sons of the prophets stood to view Elijah and Elishah cross Jordan. And in 2:15-18, 50 were sent to find Elijah.
Fifty Gileadites were killed with Pekahiah by Pekah in 2 Kings 15:25.
1 Kings 1:5, Adonijah prepared 50 men to run before him, as well as chariots and horsemen.
Obadiah hid the prophets of the Lord by fifty in a cave (1 Kings 18:4).
Hazael left to Jehoahaz "but fifty horsemen, and ten chariots, and ten thousand footmen" (2 Kings 13:7).
Lev. 27:3. The estimation of a male, who made a singular vow, when in the full energy of life from twenty to sixty years old, was to be 50 shekels.
2 Kings 15:20. Menahem exacted 50 shekels of silver from each rich man, to give to the king of Assyria.
In Esther 7:9, Haman built a gallows 50 cubits high.
2 Kings 1:9, etc. Three times a captain with 50 men was sent by the king to bring Elijah.
Ex. 40:17 and Num. 10:11 show that when the Tabernacle was set up, it stood for 50 days.
Lev. 27:16 fixes the value of a homer of barley seed at 50 shekels of silver.
The prophecy of Ezekiel is divided into 50 parts by the expression "the word of Jehovah came."