Question:I have a question regarding the historical Jesus.
First, I have heard that there are not any secular references to
Herod killing all the babies under the age of two. They say that
if this had really happened, then this would have been included in
the other writings about Herod's life. This has really been troubling
Bible Answer: The Herod found in the book of
Matthew was made king of Judea (Matthew 2) by the Romans after 37 B.C.
Herod died in 4-2 B.C. History is not very kind to Herod as it records
many of his atrocities. It is well established in secular writings that
Herod murdered the old and young and did not even spare his wives. Herod
murdered many people, He was a bloody man. The following quote comes
from a reliable source. It should answer your question.
Though it may be true that Herod was an extremely able
ruler, it is also true that he was intensely jealous of his position.
He killed the two sons of Mariammne when his suspicions were aroused
that they might become the rallying point for Jewish patriotism. Mariammne
herself was killed when his mind was poisoned against her by his sister.
The slaughter of the infants of Bethlehem (Matt. 2) finds no independent
confirmation in sources outside of the New Testament, but the incident
fits well the reign of terror of Herod's last years. A man who killed
a large part of his own family and arrested large numbers of the most
prominent citizens with orders for their execution when he died so there
would be mourning at his death (Josephus. Antiquities of the Jews. 17.6.5)
. . . would not have caused much of a stir by liquidating a score of
children in an obscure village. Knowing of Herod's conduct and the Jewish
scruples about pork, the emperor Augustus was reported to have said that
he would rather be Herod's pig than Herod's son. 
Here is the quote from Josephus.
[Herod] commanded that all the principal men of the entire
Jewish nation wheresoever they lived, should be called to him. Accordingly,
there were a great number that came, because the whole nation was called,
and all men heard of this call, and death was the penalty of such as
should despise the epistles that were sent to call them. And now the
king was in a wild rage against them all, the innocent as well as those
that had afforded him ground for accusations; and when they were come,
he ordered them all to be shut up in the hippodrome, and sent for his
sister Salome, and her husband Alexas, and spoke thus to them: I
shall die in a little time, so great are my pains; which death ought
to be cheerfully borne, and to be welcomed by all men; but what principally
troubles me is this, that I shall die without being lamented, and without
such mourning as men usually expect at a kings death. For
that he was not unacquainted with the temper of the Jews, that his death
would be a thing very desirable, and exceedingly acceptable to them;
because during his lifetime they were ready to revolt from him, and to
abuse the donations he had dedicated to God: that it therefore was their
business to resolve to afford him some alleviation of his great sorrows
on this occasion; for that, if they do not refuse him their consent in
what he desires, he shall have a great mourning at his funeral, and such
as never any king had before him; for then the whole nation would mourn
from their very soul, which otherwise would be done in sport and mockery
only. He desired therefore that as soon as they see he hath given up
the ghost, they shall place soldiers round the hippodrome, while they
do not know that he is dead; and that they shall not declare his death
to the multitude till this is done, but that they shall give orders to
have those that are in custody shot with their darts; and that this slaughter
of them all will cause that he shall not miss to rejoice on a double
account; that as he is dying, they will make him secure that his will
shall be executed in what he charges them to do; and that he shall have
the honor of a memorable mourning at his funeral. 
Herod was an evil man. So we should not be surprised that a non-Christian
wrote the following about Herod's massacre of children under the age
of two that is mentioned in Matthew 2:16.
Then when Herod saw that he had been tricked by the
magi, he became very enraged, and sent and slew all the male children
who were in Bethlehem and all its vicinity, from two years old and under,
according to the time which he had determined from the magi. Matt.
The non-Christian writer is Macrobius (A.D. 395-423). Here is his comment,
When he [emperor Augustus] heard that among the boys in
Syria under two years old whom Herod, king of the Jews, had ordered to
kill, his own son was also killed, he said: it is better to be Herod's
pig, than his son."
Conclusion:We can thank God that there is a secular
reference to Herod's massacre of the children under the age
of two. History does not record every event found in the Bible. In truth,
we do not need secular history to validate the Bible. We often
forget that the Bible is history, too. But many people do not want to
accept the Bible as history because they would then need to submit to
its authority. It is the Word of God.
1. Ferguson, Everett. Backgrounds
of Early Christianity. Eerdmans Publishing. 1993. p. 390.
2. Josephus. Antiquities of
the Jews. 17.6.5.
3. Cum audisset inter pueros
quos in Syria Herodes rex Iudaeorum intra bimatum iussit interfici filium
quoque eius occisum, ait: Melius est Herodis porcum esse quam filium," (Ambrosius
Theodosius Macrobius, Saturnalia, book II, chapter IV:11).