Dying on a cross was the capital punishment of the Roman Empire for everyone other than its own citizens. While real, the cross became a picture for the Christ Event for the early church (Eph. 2.16; Heb. 12.2; 1 Cor. 1.17, 18; Gal. 5.11; 6.12, 14; Phil. 3:18). Historically there are four forms for a cross:
+ The crux simplex (I), a “single piece without transom.”
+ The crux decussata (X), or St. Andrew’s cross.
+ The crux commissa (T), or St. Anthony’s cross.
+ The crux immissa (†), or Latin cross