Have faith in God!
This is a command of the Lord…
And Jesus answered saying to them, “Have faith in God.
Note that Jesus made the statement in response to something.
Peter had noticed that the fig tree that the Lord has spoken to earlier had withered.
What was Jesus saying?
Several things to be gleaned.
One is…our words have power.
Power in the spirit realm.
Power in the natural.
We can choose to speak blessing.
We can choose to speak curse.
Read what James says…
And the tongue is a fire, the very world of iniquity; the tongue is set among our members as that which defiles the entire body, and sets on fire the course of our life, and is set on fire by hell.
For every species of beasts and birds, of reptiles and creatures of the sea,
is tamed and has been tamed by the human race.
But no one can tame the tongue; it is a restless evil and full of deadly poison.
With it we bless our Lord and Father, and with it we curse men,
who have been made in the likeness of God;
from the same mouth come both blessing and cursing.
My brethren, these things ought not to be this way.
Does a fountain send out from the same opening both fresh and bitter water?
Can a fig tree, my brethren, produce olives, or a vine produce figs?
Nor can salt water produce fresh.
We as believers must speak forth the word of blessings and life…without ceasing.