aion denotes an age or span of time, including the present and coming age and expressions of enduring duration.

The attested use most often marks enduring duration, especially in statements of remaining, reigning, glory, or power. It also identifies a present, coming, or earlier age, and plural forms can frame successive ages in statements about what was hidden, made, or completed.

1. Enduring duration · dominant

   Accusative singular and plural forms occur in clauses of continuing existence, reign, glory, power, and torment. In 1 John 2:17 the APB renders the contrast between the passing world and the one who remains "into the age"; in Revelation 11:15 it renders Christ's reign "to the ages of the ages," and Revelation 14:11 describes smoke rising "for ages of ages."

   1 John 2:171 Peter 1:251 Timothy 1:17Hebrews 7:24Revelation 11:15Revelation 14:11
2. A specified temporal order or era · common

   Singular forms identify an age qualified as present, evil, or coming. In 1 Corinthians 2:6 the genitive singular occurs with the wisdom and rulers "of this age"; Ephesians 1:21 contrasts "this age" with "the age to come," while Galatians 1:4 speaks of deliverance from the "present evil age."

   1 Corinthians 2:61 Corinthians 3:18Galatians 1:4Ephesians 1:211 Timothy 6:172 Timothy 4:10
3. Ages as a temporal framework · occasional

   Plural forms frame multiple ages in relation to events or divine action. In 1 Corinthians 2:7 the genitive plural stands in the clause that God predestined wisdom "before the ages"; Hebrews 1:2 says that the ages were made through the Son, and Colossians 1:26 describes a mystery concealed "from the ages."

   1 Corinthians 2:71 Corinthians 10:11Colossians 1:26Ephesians 2:7Hebrews 1:2Hebrews 11:3

In the Anselm Project Bible: The APB presents the term with temporal phrases such as "this age," "the age to come," and "before the ages," while duration formulas are rendered "forever" or "forever and ever." These renderings show the verse-level presentation rather than a fixed English equivalent for each form.