Why did God reprove Eli?

Answer

"In that day I will perform against Eli all things which I have spoken concerning his house: when I begin, I
will also make an end. For I have told him that I will judge his house for ever for the iniquity which he
knoweth; because his sons made themselves vile, and he restrained them not." 1 Sam. 3:12,13.

Upon what did he rest his hope for forgiveness?
How futile was all this?
With what promise do the Old Testament Scriptures close?
What did John say was to be the end of this beast?
To whom do those things which are revealed belong?
What above all else shows God's willingness to do this?
With what should our prayers be mingled?

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