Through Christ, what has been opened to the house of David?

Answer

"In that day there shall be a fountain opened to the house of David and to the inhabitants of Jerusalem for
sin and for uncleanness." Zech. 13: 1.

What answer did he return when asked concerning his mission?
How did Christ say those who rejected Him reasoned?
By what commands has God guarded the marriage relation?
What was the effect of this apostasy?
How was this covenant then confirmed and dedicated?
What is one reason why the last days were to be perilous?
What instruction does the Apostle John give touching this subject?

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