the tree of life was a representation of the love of God.

1 Nephi 11:26
26 And the angel said unto me again: Look and behold the
condescension of God!

1 Nephi 11:27
27 And I looked and beheld the Redeemer of the world, of whom my
father had spoken; and I also beheld the prophet who should
prepare the way before him. And the Lamb of God went forth and
was baptized of him; and after he was baptized, I beheld the
heavens open, and the Holy Ghost come down out of heaven and
abide upon him in the form of a dove.

1 Nephi 11:28
28 And I beheld that he went forth ministering unto the people,
in power and great glory; and the multitudes were gathered
together to hear him; and I beheld that they cast him out from
among them.

1 Nephi 11:29
29 And I also beheld twelve others following him. And it came
to pass that they were carried away in the Spirit from before my
face, and I saw them not.

1 Nephi 11:30
30 And it came to pass that the angel spake unto me again,
saying: Look! And I looked, and I beheld the heavens open again,
and I saw angels descending upon the children of men; and they
did minister unto them.