“One Life, Two Arenas: Christian Struggle in the Monastery and Family” is the theme of a retreat to be held Feb. 17-19 at St. Luke Orthodox Christian Church, 501 Sunset Drive. The retreat is open to the public. Evening presentations on Friday and Saturday, Feb. 17-18, will begin at 7 p.m. following prayers at 5:30 p.m. and a meal. The