The New John Gill Exposition of the Entire Bible1 Samuel 18:14
And David behaved himself wisely in all his ways…
the court and in the camp, in whatsoever service he was employed; or
"prospered" F21, as the word also signifies; for, generally speaking,
those that behave wisely succeed well; in this he was a type of Christ,
(Isaiah 52:13) ; the reason of it follows,
and the Lord [was] with him;
from whom he had his wisdom and success;
the Targum is,
``the Word of the Lord was for his help.''
F21 (lykvm) "prospere admodum res gerebat", Vatablus; "secundabatur",
Junius & Tremellius, Piscator; so the Targum and Jarchi.