4 verses have
promise
in Edition Clear Qur'an by Talal Itani / Ghafir (The Forgiver)

40:8And admit them, Our Lord, into the Gardens of Eternity, which You have promised them, and the righteous among their parents, and their spouses, and their offspring. You are indeed the Almighty, the Most Wise.

40:28A believing man from Pharaoh's family, who had concealed his faith, said, “Are you going to kill a man for saying, `My Lord is God,’ and he has brought you clear proofs from your Lord? If he is a liar, his lying will rebound upon him; but if he is truthful, then some of what he promises you will befall you. God does not guide the extravagant imposter.

40:55So be patient. The promise of God is true. And ask forgiveness for your sin, and proclaim the praise of your Lord evening and morning.

40:77So be patient. The promise of God is true. Whether We show you some of what We have promised them, or take you to Us, to Us they will be returned.