8 Again, the devil took* Him to a very high mountain and showed* Him all the kingdoms of the world and their glory; 9 and he said to Him, "All these things I will give You, if You fall down and worship me." 10 Then Jesus said* to him, "Go, Satan! For it is written, 'YOU SHALL WORSHIP THE LORD YOUR GOD, AND SERVE HIM ONLY.' "
Matt 4:8-10 (NASB)
The all caps, which I think is appropriate because we use all caps online to give emphasis, yea, even to scream, and I think Jesus might just have been very emphatic with Satan at this point: I'm tired of this, and done with you, is a reference to Deuteronomy 6, where this is written:
Deut 6:13 (NASB)
But in Greek, Matthew records that Jesus put in an extra only. To make sure that it is quite clear to whom worship and service belongs. These actions belong only to God, not to anything or anyone else!
So, I'm challenged in my life to remember that there is only one God, only one who I worship, only one who is worthy.
And I need to focus on Him.