This is a Suzanne Toolan song, that while a GIA copyright, is not available at their site. She based the words on Ephesians 2:21 and 3:17.
It is in CWB and Alleluia! Amen! at least if you are looking second hand material.
Confusingly it looks like she also wrote a song called “May Christ Live in Your Heart“, which is not the same thing.
It looks like I made up chords as I couldn’t find the sheet music anywhere.