Be careful, it is not always just the intention of the maker and person praying, it also has to be an approved way of worshiping God.
Two examples:
Leviticus 10
“Now Nadab and Abihu, the sons of Aaron, each took his censer and put fire in it and laid incense on it and offered unauthorized fire before the LORD, which he had not commanded them. And fire came out from before the LORD and consumed them, and they died before the LORD. Then Moses said to Aaron, “This is what the LORD has said: ‘Among those who are near me I will be sanctified, and before all the people I will be glorified.’” And Aaron held his peace”.
Nadab and Abihu were priests and they had a duty and a right to worship God, God had given specific instructions on how that was to be done, they of their own initiative did something God did not command. Their intention was good, they wanted to worship the true and living God, but they did it in a way that He did not command them. Right intentions do not make wrong means ok.
Second example the golden calf. Many people say that it was meant to be an image of Yahweh, not a random God but it was meant to be the true and living God, they called it, “This is your god, who brought you up out of Egypt” (Nehemiah 9:18). You could argue the intention was good- they were trying to worship YAHWEH (though considering they then engaged in a sort of orgy you could wonder how much they actually had good intentions)
Point being, they made an image of Yahweh to aid their worship, but it was a grave grave sin. Intention is not the only factor.
