No, you cannot have God without Jesus.
God is a Triune God (God-The Father, God-The Son, God-The Holy Spirit). Father, Spirit and Son are not 3 different Gods, but 3 personalities in One God.
No one could come to God, without the mediator Jesus. God cannot tolerate sin and we can never become sinless on our own. Our self-righteousness is like filthy rag to God.
Only by having Jesus's righteousness imputed into us, can we stand right before God.
That is why, Jesus said, "I am The Way, The Truth and The Life".