1I lift up my eyes to the hills— from where will my help come?
2My help comes from the Lord, who made heaven and earth.
3He will not let your foot be moved; he who keeps you will not slumber.
4He who keeps Israel will neither slumber nor sleep.
5The Lord is your keeper; the Lord is your shade at your right hand.
6The sun shall not strike you by day, nor the moon by night.
7The Lord will keep you from all evil; he will keep your life.
8The Lord will keep your going out and your coming in from this time on and forevermore.
(Psalm 121, NRSV)
This is one of my favorite Psalms.
It reminds me in any and all circumstances that God is always there for me and will shelter me and guide me. God will always be there to help me and protect me. God will keep me from harm and evil and will watch over me.
That is comforting to me. To know no matter where I go or what I do God will never fail me.