Isaiah 44:15
Then shall it be for a man to burn: for he will take thereof, and warm himself; yea, he kindleth it, and baketh bread; yea, he maketh a god, and worshippeth it; he maketh it a graven image, and falleth down thereto. Then shall it be for a man to burn: for he will take thereof, and warm himself; yea, he kindleth it, and baketh bread; yea, he maketh a god, and worshippeth it; he maketh it a graven image, and falleth down thereto.
The verse exposes the folly of idolatry, in which a man takes wood used for ordinary needs and fashions it into a god and graven image that he worships and falls down to. The ordinary use is burning part of the same wood to warm himself and to kindle a fire for baking bread and cooking, while the remainder is made into the idol. Such gods are only the work of human hands, and to worship one's own workmanship rejects the Creator, in contrast to the true God as Maker of heaven and earth.
The verse belongs to a passage revealing God's purpose for His people, calling them to rely on His wisdom rather than turning from Him to finite human wisdom. The verse applies to pleading with images of saints for deliverance from danger or calamity, treating them as powers able to save.