1)
Verse 46 already said that they were exiled to "Eretz ha'Oyev." Why does the verse repeat "b'Eretz Oyveihem"?
1.
Malbim: They will have great afflictions, and see that they are not merely in their captors' land, rather, in their enemies' land, that they afflict them.
2)
What is "Derech Artzam"?
1.
Radak: They will face Eretz Yisrael, like it says "v'Chavin Pesichan
3)
Why did Shlomo mention that he built the Beis ha'Mikdash l'Shem Hashem?
1.
'Rashi' (Divrei ha'Yamim II, 6:38-39): I built it in order to aggrandize Your name. When You accept their Tefilos that they will pray to You in this Bayis, or wherever they are, and turn to Your Bayis, this aggrandizes Your name in the world.