With this news, strengthen those who have tired hands, and encourage those who have weak knees. Say to those with fearful hearts,
“Be strong, and do not fear,
for your God is coming to destroy your enemies. He is coming to save you.”
And when he comes, he will open the eyes of the blind and unplug the ears of the deaf.
The lame will leap like a deer, and those who cannot speak will sing for joy!
Springs will gush forth in the wilderness,
and streams will water the wasteland.
Isaiah 35:3–6 (NLT)
You do not strengthen and bless the hungry (to take their fear away), by giving them a smile and words of comfort. You bless them, by giving them food. The same for the cold; you give them clothes. The same is for the sick and deformed. You make the blind see, the deaf to hear, the lame to walk (etc), by miracle working power. That is what Jesus did, and commands us to do.