The best translation is the one translated into ACTION!
We actually don't use a specific translation but use excerpts from a few different translations (listed below). We also modify phrases (author's translation) to fit the songs that don't come from any specific translation, but still relay the same meaning and message.
For example:
"You shall love the LORD your God with all your heart and with all your soul and with all your might." Deuteronomy 6:5 ESV
vs.
"You will love the LORD your God with all your heart, soul and might." Deuteronomy 6:5 The Revere Project
Scripture taken from The One New Man Bible, Copyright © 2011 William J. Morford. Used by permission of True Potential Publishing, Inc.
Scripture quotations are taken from the Holy Bible, English Standard Version. Copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers. Used by permission. All rights reserved.
Scripture quotations are taken from the Holy Bible, New Living Translation, copyright © 1996, 2004, 2007, 2013, 2015 by Tyndale House Foundation. Used by permission of Tyndale House Publishers, Carol Stream, Illinois 60188. All rights reserved.
Scripture quotations are taken from the King James Version (KJV): KING JAMES VERSION, public domain.