Salvation
Isahia is a rare phonetic variant of the Hebrew name Isaiah. It derives from the name Yeshayahu, which combines the elements 'yasha' (to save) and 'Yah' (the Lord).
Less common today
Isahia isn't in the latest US Top 1000. It last peaked at #6,092 in 1997.
US births per 5-year period, 1990βpresent (SSA data).