1)
What are "Einai v'Libi"
1.
'Rashi', Rashi on Melachim I, 9:3, both citing Targum Yonasan: My Shechinah will dwell in the house if My will is done; My eyes will be there if My heart and desire are there.
2.
Radak (on Melachim I, 9:3): My Hashgachah and My will.
3.
Malbim (on Melachim I, 9:3): (a) Hashem will supervise it with a special miraculous supervision. The eyes allude to this. (b) It will be with great love; the heart alludes to this. These two are only while the Mikdash stands. At a time of Churban, Hashem's name is called on it.
