Do not put the Lord the God to test.

The devil led him to Jerusalem and had him stand on the highest point of the temple. “If you are the Son of God,” he said, “throw yourself down from here. ¹⁰ For it is written:

“‘He will command his angels concerning you
    to guard you carefully;
¹¹ they will lift you up in their hands,
    so that you will not strike your foot against a stone.’”

¹² Jesus answered, “It is said: ‘Do not put the Lord your God to the test.’”

- Luke 4 9:12

 This is a gospel quote I live my life by. many time we got questioned on the existence of God, and we try to prove God's existence by "testing" him. Through miraculous healing, through answered prayer, through "signs". Some even blame their failure on God, and ain't it giving in to temptation of the devil?

I do not need to test my Lord. He exsist, for us.