The Bible mentions "blowing with the mouth" or using breath in a few contexts, often related to:
* Creation: God breathed the breath of life into Adam. (Genesis 2:7)
* Prophecy/Divine Breath: God's Spirit or breath is associated with prophetic utterances or power. (Ezekiel 37:9-10)
* Scorn/Contempt: Blowing or puffing out the mouth can be a gesture of derision. (Psalm 12:5)
* Weakness/Frailness: Human beings are likened to a breath. (Psalm 39:5)
* Salvation: In John 20:22 Jesus breathed on them and said "Receive the Holy Spirit"
It's important to consider the context of each passage to understand the specific meaning.