3 verses have
pledge
in Edition Clear Qur'an by Talal Itani / Al-Maaida (The Table)

5:12God received a pledge from the Children of Israel, and We raised among them twelve chiefs. God said, “I am with you; if you perform the prayer, and pay the alms, and believe in My messengers and support them, and lend God a loan of righteousness; I will remit your sins, and admit you into Gardens beneath which rivers flow. But whoever among you disbelieves afterwards has strayed from the right way.”

5:13Because of their breaking their pledge, We cursed them, and made their hearts hard. They twist the words out of their context, and they disregarded some of what they were reminded of. You will always witness deceit from them, except for a few of them. But pardon them, and overlook. God loves the doers of good.

5:14And from those who say, “We are Christians,” We received their pledge, but they neglected some of what they were reminded of. So We provoked enmity and hatred among them until the Day of Resurrection; God will then inform them of what they used to craft.