ἀσφαλής

Derivation

from G1 (Α) (as a negative particle) and sphallo (to "fail");

Meaning

secure (literally or figuratively)

In the King James Version

certain(-ty), safe, sure

Translated as

certainty (2), certain (1), sure (1)

Where it appears

Found in 4 verses

Acts

21:34, 22:30, 25:26

Hebrews

6:19