This parable is from Luke 18: 1-8.  To save space I will not type this passage out, but request that you read it from your own Bible.  This widow is no particular widow with the exception that she has an adversary which will not change his/her doings.  The widow is representative of God's elect (those who have trusted Christ for salvation).  The adversary is not simply someone who is pestering the widow, but someone who has done something wrong to the widow and will not repent (change their mind and admit they have done wrong and try to amend the situation).  The adversary is representative of anyone (lost or saved) who has wronged God's elect and is not willing to repent get it right and continues to bother them about it.  Because the adversary will not leave the widow alone, she persistently seeks assistance from a unjust (lost) judge.  He could care less about her situation but because of her persistence, he finally aids her and rids her of the harassment of her adversary.  Jesus explains that if someone that is not concerned about the widow's well being will do this, how much more eager is God to avenge his own if they will but have faith and understand his longsuffering.  Jesus ends the parable and closes his discussion on this matter with the statement "shall he find faith on the earth?".  I will list some lessons we should take from this parable, but I know there are many more, please feel free to add them in the comments of this post.
Lessons learned:
1.  God will avenge His own if they have faith in His ways and timing.
2.  God will avenge His own if their faith is persistent.
3.  God is longsuffering to allow the adversary ample time to repent and make things right.
4.  As we get nearer to His coming, there will not be much of this good faith left among His people.
God can take care of us, our family, and our country if we are willing to persist through faith!

Proverbs 18:22  "Whoso findeth a wife findeth a good thing, and obtaineth favour of the Lord."  If finding a wife is a good thing, we should not be satisfied with simply dating and acting like a married couple in the bedroom.  We should also never consider living together.  A wife is a lady that we have married.  If we settle for anything other than marriage when we have found the lady we are supposed to be with, we are settling for much less than the best.  We are also not in the "favour of the Lord".