Vine's Expository Dictionary: View Entry
ἀτενίζω atenízō, at-en-id'-zo; from a compound of G1 (as a particle of union) and τείνω teínō (to stretch); to gaze intently:—behold earnestly (stedfastly), fasten (eyes), look (earnestly, stedfastly, up stedfastly), set eyes.
The KJV translates Strong's G816 in the following manner: look steadfastly (2x), behold steadfastly (2x), fasten (one's) eyes (2x), look earnestly on (1x), look earnestly upon (1x), look up steadfastly (1x), behold earnestly (1x), miscellaneous (4x).
to fix the eyes on, gaze upon
to look into anything
metaph. to fix one's mind on one as an example
Strong's Number G816 matches the Greek ἀτενίζω (atenizō),
which occurs 14 times in 14 verses
in the TR Greek.