Keep.

Psalm 121: 5-8 "The Lord is your keeper; the Lord is your shade on your right hand. The sun shall not strike you by day, nor the moon by night. The Lord will keep you from all evil; He will keep your life. The Lord will keep you going out and your coming in from this time forth and forevermore."

KEEP שָׁמַר (shamar):  

To guard, have charge of, protect, save, retain, treasure up; keep watch and ward, observe, watch for...

First of all, I want to say that I love Hebrew so much! I miss taking that class! We can find so many different descriptions and definitions for words in the Hebrew. I looked up the word "keep" in Hebrew because I figured that the Psalmist was trying to say something since this word is repeated 6 times (in several forms) within this chapter. 

In verse 5, we find that he keeps us by protecting us and "shading" us from harm. This imagery of a shade reminds me of an umbrella. So just as an umbrella guards us from rain or sun, the Lord protects and guards us from all of the things that could bombard or harm us. It is a form of shelter. When there is a storm outside, we usually run as fast as we can to shelter. The same is true with the storms in life. We must seek shelter or shade by running to the Lord, who will guard and protect us from all of the dangers and trials of life. He is our place of safety and rest. 

In verse 7, it says that He keeps us from evil. Not only will he protect us from the evil that surrounds us, but He will also keep us from doing what is evil in His sight. He is the Guardian of our lives, so we do not have to fear. In everything that we do (going in and coming out), He will watch over us. 

One form of imagery that I found in studying the Hebrew is that of a garden. In Song of Solomon, we see that we, as the bride of Christ, are a garden. He is the keeper of the garden. He owns it and tends to it. This means that we are His alone. We must yield ourselves to His care and protection. The Garden Keeper provides us with all of the things that we need- water, light, food- as the garden is planted deep into the foundation. We too must be rooted in the foundation, Jesus Christ. We must continually receive our food, the Word. We need the refreshing and renewing water of the Spirit. We must have His light shining on us, which is the glory of His presence. And within all of this, we must make sure that we are HIS. That we allow Him to tend to us in the way that He must. Sometimes He has to prune us and remove things that are not necessary in our lives. This can be painful, but if we trust Him, we will see that He is good and only wishes good for us.