Corresponding Greek / Hebrew Entries: While there is no direct Hebrew equivalent for ἀχλύς, the concept of spiritual blindness or dimness can be related to Hebrew terms such as עִוָּרוֹן (ivaron, Strong's Hebrew 5788), meaning "blindness," and עָב (av, Strong's Hebrew 5645), meaning "cloud" or "thick darkness," which are used in the Old Testament to describe both physical and spiritual conditions of obscured vision or understanding.

Usage: In the New Testament, ἀχλύς is used to describe a temporary blindness or a veil over the eyes, often in a metaphorical sense to indicate spiritual blindness or a lack of understanding.

Context: The term ἀχλύς appears in the New Testament in Acts 13:11, where it is used to describe the temporary blindness that falls upon Elymas the sorcerer as a result of Paul's pronouncement. The passage reads: "Now behold, the hand of the Lord is against you, and you will be blind and unable to see the sun for a time." Immediately mist and darkness came over him, and he groped about, seeking someone to lead him by the hand." (Acts 13:11, BSB). This event serves as a powerful demonstration of divine authority and judgment, illustrating the spiritual blindness that can accompany opposition to the truth of the Gospel. The use of ἀχλύς in this context underscores the theme of light versus darkness, a recurring motif in Scripture that contrasts spiritual insight with ignorance or rebellion against God.