Whenever I read this verse I think about a time in 1976 when my diabetic wife Ellen thought that God was telling her to stop taking insulin. She began to feel bad and decided to look at what the bible said. She opened the book and her eyes fell to this verse in the book of Acts:
"How is it that you have agreed together to test the Spirit of the Lord?"We were both very young Christians and did not understand that getting this kind of direction was pretty ill advised. Nevertheless, God used this to help us - Ellen immediately gave herself an insulin injection. Later that year a Christian doctor wisely told Ellen that she would know if God healed her because she would have an insulin reaction.
It is interesting how Satan so often uses God's very own words to appeal to our flesh and deceive us. Our desires for "good" things like miracles and healing can sometimes be a source of temptation. So often we can misuse the scriptures and think that we are operating in faith when in fact we are simply, and foolishly, testing God.
Not my will Lord but yours.