Q. 16. Who were Enoch’s son, grandson, and great-grandson? A. 16. The Sethites Methuselah, Lamech and Noah.
Q. 17. Were they too catechized, and did they too "walk with God?" A. 17. Yes; Lamech trusted the Lord, and Noah "walked with God" (Genesis 5:29 & 6:9).
Q. 18. After God destroyed the wicked in the Great Flood, who next "walked with God"? A. 18. Abram or Abraham walked before the Lord (Genesis 12:3-8 & 15:6 & 17:1-25).
Q. 19. How did Abram show that God had made him into a righteous man? A. 19. He catechized his servants, before they took holy bread and wine (Genesis 14:14-18).