Abraham, in a red cloak and red/yellow turban carries a torch and a knife.
His son Isaac carries the wood intended for the sacrificial pyre - the
two bundles of wood are deliberately shown in a cross-shape - something
which recurs in several of the other antetype panels. The two are marching
towards the place designated by God for the sacrifice (Genesis 22).
(1 - at bottom); "ABRAHAM" / "ISAAC".