Since David was married to Michael, Jonathan was his brother-in-law (1 Samuel 18:27). In this case, however, he was remembering the covenant which they made with each other (1 Samuel 18:1–4; 1 Samuel 20:12–17; see further 1 Kings 9:12–13; 1 Kings 20:32–33).1
26 Je suis dans la douleur à cause de toi, Jonathan, mon frère!Tu faisais tout mon plaisir;Ton amour pour moi était admirable,Au-dessus de l'amour des femmes.