That was quick, ms. :)
Let me put out a couple of passages:
"As soon as it was night, the brothers sent Paul and Silas away to Berea. On arriving there, they went to the Jewish synagogue. Now the Bereans were of more noble character than the Thessalonians, for they received the message with great eagerness and examined the Scriptures every day to see if what Paul said was true." Acts 17:10ff.
Also, 18:4
"Every Sabbath [Paul] reasoned in the synagogue, trying to persuade Jews and Greeks."
18:28
"For [Apollos] vigorously refuted the Jews in public debate, proving from the Scriptures that Jesus was the Christ."
Proving from the Scriptures that Jesus was the Christ is certainly within the realm of apologetics. One might say that this was only drawing people to the Scriptures which proves the point, but of course these were people who already trust the Scriptures to begin with. What about those who don't see why they should trust the Scriptures at all? And what about:
"You are out of your mind, Paul!" [Festus] shouted. ... "I am not insane, most excellent Festus," Paul replied. ".... The king is familiar with these things and I can speak freely to him. I am convinced that none of this has escaped notice, because it was not done in a corner." 26:19-29, the whole thing is interesting in this context.
Not done in a corner means Agrippa check out my claims.
And then, 1 Corinthians 15, not writing to the Jews anymore, but to the Greeks:
"After that, he appeared to more than five hundred of the brothers at the same time, most of whom are still living, though some have fallen asleep." vs 6
It is agreed by many that this is a challenge to the Corinthians that if they have any problem with what he's saying, they are welcome to take it up with the apostles and these 500. In other words, an apologetic. Following this, Paul says: If the dead are not raised, then Christ has not been raised either. And if Christ has not been raised your faith is futile; you are still in your sins.... But Christ has been raised..."
This is an argument employing reason with the Corinthians.
It may be enough from the universe to infer the existence of God, but will that save anyone? How would you get from believing in God to believing in Christ? Apologetics can help all along the line.