"“Now therefore, my lord, as the Lord liveth, and as thy soul liveth, seeing the Lord hath withholden thee from coming to shed blood, and from avenging thyself with thine own hand, now let thine enemies, and they that seek evil to my lord, be as Nabal.” Abigail did not take to herself the credit of this reasoning to turn David from his hasty purpose, but gave to God the honor and the praise. She then offered her rich provision as a peace offering to the men of David, and still pleaded as if she herself were the one who had so excited the resentment of the chief. PP 666.2"
"Dearly beloved, avenge not yourselves, but rather give place unto wrath: for it is written, Vengeance is mine; I will repay, saith the Lord."
Abigail's actions and words, as described by EGW, embody the principle of deferring vengeance to God, as expressed in Romans 12:19. While not a direct quote, the connection is strong and relevant.
“I pray thee,” she said, “forgive the trespass of thine handmaid: for the Lord will certainly make my lord a sure house; because my lord fighteth the battles of the Lord, and evil hath not been found in thee all thy days.” Abigail presented by implication the course that David ought to pursue. He should fight the battles of the Lord. He was not to seek revenge for personal wrongs, even though persecuted as a traitor. She continued: “Though man be risen up to pursue thee, and to seek thy soul, yet the soul of my lord shall be bound in the bundle of life with the Lord thy God.... And it shall come to pass, when the Lord shall have done to my lord according to all the good that He hath spoken concerning thee, and shall have appointed thee prince over Israel; that this shall be no grief unto thee, nor offense of heart unto my lord, either that thou hast shed blood causeless, or that my lord hath avenged himself: and when the Lord shall have dealt well with my lord, then remember thine hand…
"Yet a man is risen to pursue thee, and to seek thy soul: but the soul of my lord shall be bound in the bundle of life with the Lord thy God; and the souls of thine enemies, them shall he sling out, as out of the middle of a sling. And it shall come to pass, when the Lord shall have done to my lord according to all the good that he hath spoken concerning thee, and shall have appointed thee ruler over Israel; That this shall be no grief unto thee, nor offence of heart unto my lord, either that thou hast shed blood causeless, or that my lord hath avenged himself: but when the Lord shall have dealt well with my lord, then remember thine handmaid."
Ellen White directly references 1 Samuel 25:29-31 in this passage.