A 'thousand' means much, many, a countless number, a whole era of time, an abundance. When used in reference to the Lord, it actually means a number greater than that: In those cases it means what is infinite, what is truly without end.

170. Internal Meaning of Ezekiel, Chapter 47

1-12 Influx of Divine good and Divine truth from the Lord; from this influx the angels of the three heavens, and men, have spiritual life, and from the Divine good and Divine truth they have intelligence and charity. (12, 2)

13-23 Inheritances or partitions of the church and heaven according to goods and truths in the whole complex, which is according to the tribes of Israel. (12, 11)