When discussing philosophies of Biblical translations, there are two main classifications: formal equivalence and functional equivalence.
Formal equivalence attempts to maintain the “form” of the original language inasmuch as possible. This can also be described as a word-for-word translation (although that descriptor isn’t always technically accurate.)
Functional equivalence attempts to maintain the “function” of the original language inasmuch as possible. This can be described as a thought-for-thought translation. Functional equivalence is also sometimes termed “dynamic equivalence.”
The following chart summarizes a few of the differences between formal and functional equivalence in translation:
| Formal Equivalence | Functional Equivalence |
|---|---|
| Word-for-word | Thought-for-thought |
| Words more “true to original” | Tone more “true to original” |
| Syntax often more awkward | Syntax often more natural |
| Generally higher reading level | Generally lower reading level |
| Examples: NKJV, NASB, ESV | Examples: NIV, TNIV, NLT |
Why you should choose to use formal equivalence:
- Lends itself well to deep personal study and rich word studies
- Less opportunity for interpretation in translation
- Generally uses more traditional terminology
- May be more “poetic” (“Grace of God” rather than “God’s grace”)
Why you should not choose to use formal equivalence:
- We’re not all scholars (especially not of Greek and Hebrew)
- We’re not all readers (and formal equivalence does require more work to read and understand)
Why you should choose to use functional equivalence:
- Easily read and understood
- Lends itself well to devotional and evangelistic reading
- Better captures tone of the original (which, since we aren’t all scholars, we might not be able to understand from a formal equivalence translation)
Why you should not choose to use functional equivalence:
- It’s worthwhile to stretch our minds in the study of the Bible
- The text is more likely to contain interpretation by the translator
Ultimately, both formal and functional equivalence can be useful modes for Bible translation–and are acceptable for use. I think it would benefit most believers to have at least one translation from each camp. Which type any given individual uses routinely and which type one uses as a reference probably varies a great deal based on one’s personal inclination towards cerebral or psychosocial expression. (Whether one is a “thinker” or a “feeler”, to use Myers-Briggs typology.)