Jesus had a prehuman existence as the firstborn of creation. He was given the power to do all things. You can read about this in Proverbs chapter 8. Focus particularly on vs. 22.
Since the speaker (Wisdom ) is said to be observing the Creator (Jehovah) doing the work of Creation, it is clear that Wisdom is not the Creator Himself:
Prov 8:27 When he prepared the heavens I was there; when he decreed a circle upon the face of the watery deep, 28 when he made firm the cloud masses above, when he caused the fountains of the watery deep to be strong, 29 when he set for the sea his decree that the waters themselves should not pass beyond his order, when he decreed the foundations of the earth, 30 then I came to be beside him as a master worker, and I came to be the one he was specially fond of day by day,
However, the New Testament clearly identifies Jesus Christ the Creator, not as an observer of someone else doing the work of Creation, hence He Himself was not an observer at the beginning.
John 1:3 All things came into existence through him, and apart from him not even one thing came into existence.
Hebrews 1: 10 referring to Christ says:
And: "You at [the] beginning, O Lord, laid the foundations of the earth itself, and the heavens are [the] works of your hands. 11 They themselves will perish, but you yourself are to remain continually; and just like an outer garment they will all grow old, 12 and you will wrap them up just as a cloak, as an outer garment; and they will be changed, but you are the same, and your years will never run out."