Charles Ellicott Commentary 1 Kings 9:3

"And Jehovah said unto him, I have heard thy prayer and thy supplication, that thou hast made before me: I have hallowed this house, which thou hast built, to put my name there for ever; and mine eyes and my heart shall be there perpetually." — 1 Kings 9:3 (ASV)

To put my name there for ever. —The meaning of the words “for ever” is determined by the prayer which they answer. They simply mark the Temple as the settled habitation to abide in for ever (see 1 Kings 8:13), in contrast to the movable tabernacle. Whether they were to have a larger significance is expressly declared to depend on the faithfulness of Israel (see 1 Kings 9:7–8).

Mine eyes and mine heart. —See 1 Kings 8:29.