On what did God write the Ten Commandments?

Answer

"And He declared unto you His covenant, which He commanded you to perform, even Ten
Commandments; and He wrote them upon two tables of stone." Deut. 4: 13.

How did Abraham respond to this command?
What reason did Solomon give for urging all to fear God and keep His commandments?
What other sign, or wonder, appeared in heaven?
What does He say He will bring with Him when He comes?
What command was given these locusts?
Whatever may come, what blessed assurance has everyone who loves God?
What did John see concerning this city?

Questions & Answers are from the book Bible Readings for the Home Circle