As the coming of the Lord draws closer the glory of the Lord will increase. Those who follow religion as a form, as it seems Zachariah did, will have their spiritual shallowness exposed in the presence of the glory. Those who have inclined their heart to the Word, as Mary must have done, are the most likely to be able to comprehend and interpret spiritual matters (Proverbs 4:1, The Amplified Bible).
Througout the book of Proverbs, and especially in Chapters 2-4, we see that wisdom, understanding and honor for God result in riches and honor from God. It is an honor to have our eyes opened to the realm of the spirit. In these last days, as we honor God and His Word, we can expect to have an increase of angelic activity, both seen and unseen.
Everyone is familiar with the Christmas-card version of angels in the sky--singing sweet melodies. The Amplified Bible gives a clear picture of reality. Luke 2:9 says, "Behold, an angel of the Lord stood by them, and the glory of the Lord flashed and shone all about them, and they were terribly frightened."
It gets better in verse 13--"Suddenly there appeared with the angel an army of the troops of heaven (a heavenly knighthood), praising God..."
It's important to notice the scripture never says they were in the sky or that they were singing. That may be a nice Christmas card, but the fact is these were heaven's fierciest troops, sent to watch over the first coming of the Lord. They were on duty, right here on earth, assisting men in fulfilling the plan of God for all of mankind.
The angels at work among us today are just as fierce, just as purposeful and just as full of the glory as they watch over the Second Coming Of The Lord.