God is Spirit - without the Holy Spirit you cannot relate to Him.
For you to have any relationship with God, it must be through His Word by His Spirit.
In the heart of man, there is a constant conflict between the flesh and the spirit.
A servant cannot be greater than his master.
It is better to live poorly upon the fruits of God's goodness than live plentifully upon the products of our own sin.
What is possible for you in Christ Jesus depends on your capacity to believe.