Mr 1:10 And straightway coming up out of the water, he saw the heavens opened, and the Spirit like a dove descending upon him:

When the heavens are opened, what can be seen? The firmament divides the waters above and below. ^[1] Jesus as the firmament, as the solid thing between the waters of baptism and the waters of heaven, could see both sides.

There were two things between the waters: the firmament, and the spirit. ref>Ge 1:6 ¶ And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.</ref> ^[2]

1. ↑ Ge 1:6 ¶ And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.
2. ↑ Ge 1:2 And the earth was without form, and void; and darkness [was] upon the face of the deep. And the Spirit of God moved upon the face of the waters.