1 Samuel 18:3-5

New Revised Standard Version, Anglicised Catholic Edition

³ Then Jonathan made a covenant with David, because he loved him as his own soul. ⁴ Jonathan stripped himself of the robe that he was wearing, and gave it to David, and his armour, and even his sword and his bow and his belt. ⁵ David went out and was successful wherever Saul sent him; as a result, Saul set him over the army. And all the people, even the servants of Saul, approved.