🔼The name Giddalti in the Bible
There's only one man named Giddalti in the Bible. He is mentioned as one of the sons of Heman, king David's seer, who's duty it was to sing for the service of the house of God (1 Chronicles 25:4). Additional duties were dispersed according to lot, and the twenty-second lot came out for Giddalti and his sons and relatives (1 Chronicles 25:29).
🔼Etymology of the name Giddalti
The name Giddalti comes from the verb גדל (gadel), meaning to become strong or great:
Our name is formed from the root of the verb plus the extension תי, which marks the first-person perfect tense: "I made great" or "I have made great".
For a meaning of the name Giddalti, NOBSE Study Bible Name List reads I Have Made Great. Jones' Dictionary of Old Testament Proper Names renders the curious I Have Trained Up. And BDB Theological Dictionary proposes I Magnify (God)