Having trust in God makes us feel safe, since our God is the one who helps us and sustains us, no matter where we are, no matter who persecutes us, God is with us, and that is why we must have all our trust placed in Him.
Our trust should not be placed in human beings, because many promise and do not fulfill, we have our God of heaven, who sent His Son to die for us, who performed miracles and wonders while He was on earth, in Him we must trust:
For the Lord shall be thy confidence, and shall keep thy foot from being taken.
Proverbs 3:26 (KJV)