Isaiah 26:4

New English Translation

⁴Trust in the Lord from this time forward,^[a]
even in Yah, the Lord, an enduring protector!^[b]

Isaiah 26:4 tn Or “forevermore.” For other uses of the phrase עֲדֵי־עַד (ʿade ʿad) see Isa 65:18 and Pss 83:17; 92:7.
Isaiah 26:4 tc The Hebrew text has “for in Yah, the Lord, an everlasting rock.” Some have suggested that the phrase בְּיָהּ (beyah, “in Yah”) is the result of dittography. A scribe seeing כִּי יְהוָה (ki y^ehvah) in his original text would somehow have confused the letters and accidentally inserted בְּיָהּ between the words (bet and kaf [ב and כ] can be confused in later script phases). A number of English versions retain both divine names for emphasis (ESV, NIV, NKJV, NRSV, NLT). One of the Qumran texts (1QIsa^a) confirms the MT reading as well.

New English Translation (NET)