4 verses have
son
in Edition Clear Qur'an by Talal Itani / Luqman (Luqman)

31:13When Luqman said to his son, as he advised him, “O my son, do not associate anything with God, for idolatry is a terrible wrong.”

31:16“O my son, even if it were the weight of a mustard-seed, in a rock, or in the heavens, or on earth, God will bring it to light. God is Kind and Expert.

31:17O my son, observe the prayer, advocate righteousness, forbid evil, and be patient over what has befallen you. These are of the most honorable traits.

31:31Have you not seen how the ships sail through the sea, by the grace of God, to show you of His wonders? In that are signs for every persevering, thankful person.