Sad - you continue to think that only your skewed opinion is the *right* definition of God, Trinity, etc.  Most experts try to put on a little *humility* and realize that defining God, Trinity, etc. is a *mystery*.
Let's see what a John Henry Cardinal Newman said about *change*:
“To live is to change, and to be perfect is to have changed often” - so, apply to God who is complete action - that action is change.
OR
“Growth is the only evidence of life.” 
https://books.google.com/books?id=-QP_-A-kHF4C&pg=PA97&lpg=PA97&dq=does+God+change+-+Karl+Rahner+essay&source=bl&ots=kp8BhJ0v3Q&sig=6hRAOIoDI-cPuCj789IDokUUk8I&hl=en&sa=X&ved=0ahUKEwj85crd_N_WAhVj44MKHdViDPkQ6AEIUzAH#v=onepage&q=does%20God%20change%20-%20Karl%20Rahner%20essay&f=false
Book - Does God Change by Jennifer Herrick
Can a person be in a trusting relationship with a God who changes?  Both the OT & NT are filled with stories that show God changing in response to human needs, pleading, etc. God's not changing is not a church dogma