According to the Bible, Jesus was not merely a good man, He was also God. What claim did Jesus Himself make concerning His divinity?

“If you really knew me, you would know my Father as well. From now on, you do know him and have seen him. . . . Anyone who has seen me has seen the Father.”
—John 14:7-9.

“I and the Father are one.”
—John 10:30. (Unless otherwise noted, all Scriptural texts in the DISCOVER guides are from the New International Version of the Bible [NIV].)

If you wish to know the answer to the questions, “Who is God? What is He like?” just look at Jesus. The Father shares the same love and care for each person that Jesus demonstrated during His human life on earth.

What matching claim did John make concerning Jesus’ divinity?

“In the beginning was the Word [Christ], and THE WORD WAS WITH GOD, AND THE WORD WAS GOD. He was with God IN THE BEGINNING. Through him all things were made; without him nothing was made that has been made.
“The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the One and Only, who came from the Father, full of grace and truth.”
—John 1:1-3, 14.

Jesus, the Word, is as fully God as is the Father. Jesus was with God “in the beginning.” He was the One who spoke all things into existence.

How long have the Father and the Son existed together?

“But to the Son He [God] says: ‘Your throne, O God, is forever and ever; A scepter of righteousness is the scepter of Your kingdom’.”
—Hebrews 1:8, NKJV, (The Holy Bible, New King James Version, copyright © 1979, 1980, 1982 by Thomas Nelson, Inc., Nashville, Tennessee.)

God the Father and Jesus the Son have existed together from eternity. There never was a time when Jesus was not one with the Father.