Have you read the book or seen the movie?

When it was first published it was quite controversial. Many have found solace and understanding of the Trinity from this book and the subsequent movie.
“So what do I do now?” asked Mack. Jesus replied “What you’re already doing, Mack, learn to live loved. It’s not an easy concept for humans. You have a hard time sharing anything.” He chuckled and continued, “So yes, what we desire is for you to ‘re-turn’ to us, and then we come and make our home inside you, and then we share. The friendship is real, not merely imagined. We’re meant to experience this life, your life, together, in a dialogue, sharing the journey. You get to share in our wisdom and learn to love with our love, and we get …. to hear you grumble and gripe and complain, and …”
The Shack Page 174-175 by Paul Young
The subtitle on the book reads “You are never as alone as you think.”
If you have not read it check your local library. Or try to get the DVD or movie through Hoopla at the library. It will certainly have you thinking about your relationship with the Trinity and their work in your life. Well worth your time and in my opinion, something to give you a good long think!
The most difficult thing about the Christian concept of the Trinity is that there is no way to perfectly and completely understand it. The Trinity is a concept that is impossible for any human being to fully understand, let alone explain. God is infinitely greater than we are; therefore, we should not expect to be able to fully understand Him. The Bible teaches that the Father is God, that Jesus is God, and that the Holy Spirit is God. The Bible also teaches that there is only one God. Though we can understand some facts about the relationship of the different Persons of the Trinity to one another, ultimately, it is incomprehensible to the human mind. However, this does not mean the Trinity is not true or that it is not based on the teachings of the Bible.
https://www.gotquestions.org/Trinity-Bible.html
The Shack is just one interpretation of the Trinity. No one person knows for certain how to teach and understand the complex nature of what we worship.
LORD, help our lack of understanding. Lead us deeper to Your heart. Help us learn to live as loved. Amen.