How is Jesus God

Good Afternoon Vanessa, I just joined this website, but I hope you'll still see this.

Here's the explanation from Orthopedia, I feel like it's very good.

Explanation of the Trinity

WHAT GOD IS NOT: God is not an impersonal essence nor merely a "higher power." Neither are God and Trinity simply singular names for what would otherwise be considered three gods (i.e. terms which would hide polytheism).

WHAT GOD IS:
Though the Trinity is a mystery beyond comprehension, two analogies are often used to help explain what Trinity means. The first references the sun, and the second references man.

The Sun: The sun is characterized by three elements.
(1) The ball of burning gas is the source of all (like the Father).
(2) The light is visible to all (like the Son).
(3) The heat is felt, but not seen (like the Holy Spirit or Comforter).

The sun has never been the sun without its light and heat, and
the light and heat cannot exist without their source. In addition,
while they may co-exist, they do not produce each other in and of
themselves. (ex. You can’t read by the light of a heating pad, nor can
you count on getting warm wherever it is bright.)

Man: It is said that each human has been made in the
image of God; and, as such, each human bears similarities to our
Trinitarian Lord and God:
(1) Man's nous (i.e. complete mind and heart; including
intellect, creativity, feelings, morality, intuition, etc.) is like the
Father.
(2) Man's flesh (both tangible and a temple of the Holy Spirit), is akin
to the Son who became incarnate and was filled with the Holy Spirit.
(3) Man's life (or breath) is akin the Holy Spirit.

Man (any human) is all three. There is never a time that man has
existed (or could exist) without all three. For a human nous cannot
exist without a body and life, a human body does not exist--at least at
the start--without a nous and life, and a human life cannot exist
without a nous and body.

The benefit and limitation of analogies: Each of these analogies is good at expressing a three-ness and one-ness with no polytheism. However, according to Saint Gregory the Theologian, trying to go further to comprehend unbegotten-ness (Father), begotten-ness (Son), or procession (Holy Spirit) leads to insanity. Therefore the Church traditionally approaches God in divine mystery (and apophatically),
content to encounter Him rather than comprehend Him (for it is
impossible for the created to comprehend the ineffable Creator).

Image & Likeness Distinguished

It should be noted that while each human being is in the image of God, humans were also created to be in His likeness. St. Ephrem the Syrian often writes of mankind initially being "robed in glory," referring to bearing the likeness of God.^[1] God is good; and, to be like God, a person needs to be good as well.

This, however, is where the Fall is evident; for, as St.
Ephrem points out, when Adam and Eve looked to themselves to determine
right and wrong (daring to become as God without God^[2]
choosing their own leadership rather than God's by not waiting to know
all things through and with Him) they became naked--no longer bearing
His likeness... no longer "robed in glory." From this point on, we know
the tale... in God's mercy, they departed Eden. (For giving them
access to the Tree of Life--immortality--when not in God's
likeness--would indeed have been a living hell.)

Ask me if you have any questions or want an elaboration.

Kind Regards, Shun