Dict: strongs - stedfastness
Strongs:
G4733 @ στερέωμα stereōma ster-eh'-o-mah From G4732; something established that is (abstractly) confirmation (stability): - stedfastness.
G4740 @ στηριγμός stērigmos stay-rig-mos' From G4741; stability (figuratively): - stedfastness