Strong’s Greek
G573 — haplous
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἁπλοῦς
haplous — pronounced hap-looce'
probably from 1 (as a particle of union) and the base of 4120; properly, folded together, i.e. single (figuratively, clear):--single. see GREEK for 1 see GREEK for 4120
2 occurrences in the KJV.
Matthew 6:22
The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light.
Luke 11:34
The light of the body is the eye: therefore when thine eye is single, thy whole body also is full of light; but when thine eye is evil, thy body also is full of darkness.