In DanielΒ 9:25, the prophet Daniel was told that from the going forth of the commandment to restore Jerusalem βunto the Messiahβ would be 69 weeks of years (cf. Gen. 29:27; Lev. 25:8). Frankly, this very specific prophecy baffled Bible students for many years, for the predicted time of 483 years (69Γ7) βunto the Messiahβ did not match up with the time of the Lord Jesus Christ.
Then, in his book The Coming Prince, a Bible teacher named Sir Robert Anderson realized the problem lay in the different ways Jews and Gentiles mark time. We number our years using a solar calendar wherein each year has 365ΒΌ days, but the Jews used a 360-day lunar calendar, with each year consisting of 12 months of 30 days each.
Evidence of this is found in GenesisΒ 7:11, where we read that the deluge began βin the second month, the seventeenth day of the month,β yet exactly βan hundred and fifty daysβ later (Gen. 7:24), βthe ark rested in the seventh month, on the seventeenth day of the monthβ (8:3,4). The only way an exact period of five equal months can endΒ 150 days laterΒ on the same day of the month is if each of those months has 30 days. Further evidence of this is seen when we remember that the last half of Danielβs seventieth week is sometimes said to last βforty and two monthsβ (Rev. 11:2), and sometimes it is said to last βa thousand two hundred and threescore daysβ (Rev. 11:3). The only way 42 equal months can work out to 1260 days is if each of those months has 30 days.
Once Sir Robert recalculated the prophecy using lunar years, he found that the 69 weeks βunto the Messiahβ worked outΒ to the very dayΒ the Lord Jesus rode the colt into Jerusalem and made an official presentation of Himself to Israel. No wonder the Lord lamented later that day, βIf thou hadst known, even thou, at leastΒ in this thy day, the things which belong unto thy peace!β (LukeΒ 19:42).
The point? When you are asked why men should trust the God of the Bible, why not give the reason God Himself givesβfulfilled prophecy!Β (Isa. 42:8,9; 44:7,8 cf. JohnΒ 13:19). To those who would tout the gods of the worldβs other religions, God says, βProduce your causeβ¦bring forth your strong reasonsβ¦let them bring them forth, and shew us what shall happenβ¦shew the things that are to come hereafter, that we may know that ye are godsβ (Isa. 41:21-24).
The God of the BibleΒ aloneΒ is God! source