Yes, this is a very powerful and profound question and the answer is YES, YES, YES.
There are so very many instances where Jesus said He was God and with God and I will try to give you just a few examples.
“…he who has seen Me has seen the Father…” John 14:9
“…I and The Father are one…” John 10:30
Jesus repeatedly referred to himself as “I am” (John 8:58) which in the Hebrew tradition amounted to a declaration that He was God. It was these repeated pronouncements that infuriated the Pharisees and ultimately caused them to crucify Him.
On one occasion, Jesus invited three of his disciples, James Peter and John, to accompany him to Mt. Tabor to witness Him being transfigured to the Majesty He had before coming to earth. There Jesus was joined in midair by Moses and Elijah and the witnesses heard the voice of God saying,
“This is my Son, whom I love; with him I am well pleased. Listen to him!” Matthew 17:5
Furthermore, Jesus raised several people from the dead including Lazarus, a man who had been dead three days and was starting to stink of decay. There were many witnesses to these events. Most significantly, Jesus, himself, rose from the dead, one of the most documented events of the ancient world.
Following His resurrection, Jesus appeared in bodily form to hundreds of people and during this period He would suddenly appear and disappear thru doors and walls in a locked room.
The evidences are many and clear. His coming to earth, living a perfect life, performing many miracles, suffering a terrible death for us on a cross and rising from the dead that we may be forgiven and enjoy fellowship with Him now here on this earth is sufficient to confirm that Jesus is indeed God.