Because it a courtesy to say thank you to the one providing the goods?
And even if things go wrong or stuff up, you can take it back to them and say, sorry, but it wasn't what I thought it was. Or I don't know how to use it. Then they might give you a refund or teach you something more or something.
See God doesn't actually need the flattery, He's just going about His business. And the business can't run or reach further if He doesn't get the custom right. And how do people know about the business. Word of mouth. Hence..testimony. Praise.
And even if things go wrong or stuff up, you can take it back to them and say, sorry, but it wasn't what I thought it was. Or I don't know how to use it. Then they might give you a refund or teach you something more or something.
See God doesn't actually need the flattery, He's just going about His business. And the business can't run or reach further if He doesn't get the custom right. And how do people know about the business. Word of mouth. Hence..testimony. Praise.