You shall not tempt the Lord your God.
When Satan brought Jesus to Jerusalem, he set Him on the pinnacle of the temple...
Satan: 'If You are the Son of God, throw Yourself down from here. For it is written: He shall give His angels charge over you, to keep you' (Luke 4:9-10)
Common talk: 'Hey, Jesus, jump off that steeple. God said His angels will catch you.'
Jesus rebuked Satan with scripture.
Do we know what to do, but don't do it? Do we think, 'I'll do what I want because God will save me, transform me, or forgive me?' Anyone who lives a selfish, reckless, or deliberately harmful life is tempting God.
We cannot take His grace for granted. He will surely give grace if we ask, but He doesn't say how or when it will be delivered. The delivery may be painful. The lesson may be hard. We may be short-changing the joy available in our lives and our ability to help others.
An even more deadly form of reckless living is to postpone getting 'serious' about God. We may believe in Jesus, but we don't want to fully commit to Him, change our lifestyles, or give up our perceived control.
But Jesus says, 'Watch therefore, for you do not know what hour your Lord is coming' (Matthew 24:42).
Half-hearted Christians risk not hearing the ultimate words, 'Well done good and faithful servant' (Matthew 25:21), but instead, 'because you are lukewarm, and neither hot nor cold, I will spit you out of My mouth' (Revelation 3:16).
Tempting God is not a risk worth taking.
P.S. To read the other devotions in this series, please see the Temptation series.