Matthew 21:21
Jesus answered and said to them, Truly I say to you, If you have faith, and doubt not, you shall not only do this which is done to the fig tree, but also if you shall say to this mountain, Be you removed, and be you cast into the sea; it shall be done.
Torrey's Topical Textbook—AKJV

James 5:15
And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him.
Torrey's Topical Textbook—AKJV