In perhaps the most well known verse in the entire Bible the Lord Jesus said,
For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.
John 3:16
the word μονογενής : monogenēs translated here as “only begotten” can also be translated “one and only” conveys the meaning of uniqueness, one of a kind.
Those who have trusted in Christ, who have received Him as Lord and Saviour, have become sons and daughters of God, born of the Spirit by grace, through faith. We are individuals among many similar individuals.
“But as many as received Him, to them He gave the right to become children of God, to those who believe in His name: who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.”
John 1:12-13
Unlike us (creatures) Jesus Christ is God, the Son (the Creator) in relationship with the Father from eternity,
“ In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things were made through Him, and without Him nothing was made that was made.”
John 1:1-3