Free bible studies for married and dating couples to do together. When couples read and study the Bible together, they increase spiritual intimacy — this is a great place to start. Growthtrac offers a variety of daily devotions and studies available only through e-mail… free!. To begin receiving one or more of these e-mails, please complete Steps 1, 2 and 3 below. Your devotions will be e-mailed to you automatically. You may easily cancel your subscription at any time.