Luke 17:5-6

The apostles said to the Lord, “Increase our faith [our ability to confidently trust in God and in His power].” And the Lord said, “If you have [confident, abiding] faith in God [even as small] as a mustard seed, you could say to this mulberry tree [which has very strong roots], ‘Be pulled up by the roots and be planted in the sea’; and [if the request was in agreement with the will of God]it would have obeyed you. [Matt 17:20; Mark 11:23; 1 John 5:14]