Steal up on (someone or something) phrase
To come near to somebody/something quickly and quietly so as not to be discovered.
If you steal up on me again, I will beat the crap out of you.
The cat stole up on the mouse and killed it.
There have been reports of an attacker stealing up on people from the shadows to rob them.
To occur to someone quickly or imperceptibly.
Do what you are passionate about, and success will steal up on you.
Changes in his mindset have stolen up on him since he joined this group.
The verb "steal" must be conjugated according to its tense.
The origin of this phrase is not clear.
State something in a very strong, clear and effective way
Congratulation on your speech! You really drive your message home!