From an unused root (compare dabab) (probably meaning to be sluggish, i.e. Restful); quiet -- strength.
see HEBREW dabab
H1679. dobe
[דֹּ֫בֶא] noun [masculine] perhaps rest, but sense very doubtful (? Arabic rest, †amus; ᵑ7 ᵑ6 ᵐ5Onk strength, reading perhaps רבאך compare Samaritan רביך, see Di) דָּבְֶאךָ׃ וּכְיָמֶיךָ Deuteronomy 33:25.