“Offer hospitality to one another without grumbling.” 1 Peter 4:9 NIV   When I was nineteen, my dad decided to call quits on his twenty-five year marriage. Even though he told my sister and me he was divorcing our mom, not us, that’s not exactly the way our lives played out. The day he left, he packed his stuff, drove out of state, and settled in with the woman who’d asked him to leave. Widowed with two small boys, she convinced him to marry her and adopt her kids and raise them as his own. Over that year, his infrequent trips to see my sister and I dwindled to zero.…