Sayyiduna Dawood عَـلَيْـهِ الـسَّـلَام considering him to be unwell, however, he would have no illness, rather he would be engrossed in the fear of Allah Almighty. (Tareekh Ibn Asakir, vol. 51, p. 23, Hadith 10716)

Sayyiduna Khalid Bin Darkle رَحْمَةُ الـلّٰـهِ عَـلَيْه narrates, that Sayyiduna Dawood عَـلَيْـهِ الـسَّـلَام and Sayyiduna Luqman رَضِىَ اللّٰهُ عَـنْهُ met one another. Sayyiduna Dawood عَـلَيْـهِ الـسَّـلَام stated: ‘O Luqman! What state did you awaken in this morning?’ Sayyiduna Luqman رَضِىَ اللّٰهُ عَـنْهُ requested: In this contemplation, that my soul is in control of someone else (meaning, in the control of Allah Almighty). Sayyiduna Dawood عَـلَيْـهِ الـسَّـلَام then, upon hearing this statement and thinking upon it, exclaimed loudly due to the fear of Allah Almighty. (Husn-ul-Tanabbuh, vol. 5, p. 15)

Sayyiduna Ibn Saabit رَحْمَةُ الـلّٰـهِ عَـلَيْه narrates, that after Sayyiduna Adam   عَـلَيْـهِ الـسَّـلَام, if the tears of Sayyiduna Dawood عَـلَيْـهِ الـسَّـلَام, which flowed from his blessed eyes due to the fear of Allah Almighty, were compared to all of the tears of the people of the earth, both would be equal. (Mawsu’ah Ibn Abi Al-Dunya, vol. 3, p. 38, Hadith 337)

Dear Islamic brothers! اللّٰھ اکبر! Sayyiduna Dawood عَـلَيْـهِ الـسَّـلَام was a distinguished Khalifah of Allah Almighty and honoured with being upon the station of Prophethood. In his book of deeds, there is not even a singular particle or atom of sin to be found. He عَـلَيْـهِ الـسَّـلَام was pure from committing sins, and not only is he a certain and definitive resident of Jannah, but one who shall be found in its highest realm. Even with all of these qualities, he would possess such incredible fear of Allah Almighty. Then think, how much us sinful Muslims should fear Allah Almighty, as we do not have even a single good deed to our name, our days and nights are spent in constant transgressions and sins, and we do not fear Allah Almighty in the way we should. Fearing Allah Almighty is such a unique bounty and favour, that he who possesses this remains far from sins and close to good deeds. Furthermore, due to fearing Allah Almighty, a huge host of people will enter Jannah.