John Gill Commentary 1 Samuel 25:32

"And David said to Abigail, Blessed be Jehovah, the God of Israel, who sent thee this day to meet me:" — 1 Samuel 25:32 (ASV)

And David said to Abigail
Having heard her out, and being overcome with her rhetoric and powerful arguments:

blessed [be] the Lord God of Israel, who sent you this day to meet
me ;
who put it into her heart to come out and meet him, and endeavor to avert him from his bad design, which his heart was set upon; he saw plainly the hand of God in it, and in the first place acknowledges the goodness of divine Providence, in directing her to take the step she did.