Because of who He is

Psalm 121
1 I look up to the mountains—
does my help come from there?
2 My help comes from the Lord,
who made heaven and earth!
3 He will not let you stumble;
the one who watches over you will not slumber.
4 Indeed, he who watches over Israel
never slumbers or sleeps.
5 The Lord himself watches over you!
The Lord stands beside you as your protective shade.
6 The sun will not harm you by day,
nor the moon at night.
7 The Lord keeps you from all harm
and watches over your life.
8 The Lord keeps watch over you as you come and go,
both now and forever.