John 1:1; In the beginning was the Word, and the Word was with God, and the Word was God.
John 1:2; He was in the beginning with God.
John 1:3; All things came into being through Him, and apart from Him nothing came into being that has come into being.
The Word (Jesus) was both "with" God.. and also God Himself. Gen 1:1; says God created the heavens and the earth. Verse 3 above says Jesus created everything.
Sometimes the argument here is the word "Word". However verse 14 says...
John 1:14; And the Word became flesh, and dwelt among us, and we saw His glory, glory as of the only begotten from the Father, full of grace and truth.
Col 1:16-17; also says Jesus created everything.
A prophecy of Isaiah says...
Isa 9:6; For a child will be born to us, a son will be given to us;
And the government will rest on His shoulders;
And His name will be called Wonderful Counselor, Mighty God,
Eternal Father, Prince of Peace.
John 6:46; says if you've seen Jesus, you've seen the Father.
John 10:30; I and the Father are one.”
There are dozens of verses that say the Father is God. There are also some verses that say Jesus is God.
Titus 2:13; looking for the blessed hope and the appearing of the glory of our great God and Savior, Christ Jesus,
2 Pet 1:1; Simon Peter, a bond-servant and apostle of Jesus Christ,
To those who have received a faith of the same kind as ours, by the righteousness of our God and Savior, Jesus Christ:
God the Father calls the Jesus the Son God in Hebrews.
Heb 1:8; But of the Son He says,
“Your throne, O God, is forever and ever,
And the righteous scepter is the scepter of His kingdom.
In Exodus 3, God tells Moses....
Exod 3:14; God said to Moses, “I AM WHO I AM”; and He said, “Thus you shall say to the sons of Israel, ‘I AM has sent me to you.’”
God is "I AM".
John 8:58; Jesus said to them, “Truly, truly, I say to you, before Abraham was born, I am.”
Jesus is also "I AM".
In Rev 21, the Father says...
Rev 21:6; Then He said to me, “It is done. I am the Alpha and the Omega, the beginning and the end. I will give to the one who thirsts from the spring of the water of life without cost.
In Rev 22, Jesus says...
Rev 22:13; I am the Alpha and the Omega, the first and the last, the beginning and the end.”
They are both the Alpha and Omega, they are both the first and the last.
There are dozens more... but this is a fair start.