Matthew Poole and continuators on 1 Kings 15:5

5 Because David did that which was right in the eyes of the LORD, and turned not aside from any thing that he commanded him all the days of his life, save onely in the matter of Uriah the Hittite .

Quest. How is this true, seeing David sinned in the matter of Nabal, 1 Sam. 25. and Achish, chap. 27. and Mephibosheth, and his indulgence to his Children, Adonijah, Amnon and Absalom; and in the numbring of the People? Ans. This and the like Phrases are not to be understood as exclusive of every sinful action, but onely of a sinful course or state, or of an habitual and continued Apostacy from God, or from his ways, as the very Phrase of turning aside from God or from his Commands, doth constantly imply, as appears from Exod. 32. 8. Deut. 9. 12, 16. 1 Sam. 8. 3. Psal. 78. 57. Isa. 44. 20. 1 Tim. 1. 6. and 5. 15, &c. And thus it is most true. For David's other sins were either sudden and transient acts, proceeding from humane infirmity, and extraordinary temptations, and soon repented of and blotted out, as in the cases of Nabal and Achish; or, mistakes of his judgment, which was not fully convinced of the sinfulness of such actions, as in the other cases alledged: whereas that which concerned Uriah's Wife was a designed and studied sin, long continued in, defended with a succession of other sins, presumptuous, and scandalous to his Government, and to the True Religion, which he so eminently professed.

Marginal references: 2 Sam. 11. 4 and 12. 9.