Prayer Requests

Seeing 666 everywhere

I am a Christian who pray, fast, pray in tongues for years. For the past few weeks, I have been seeing 666 everywhere (store receipts, account, etc…). I experienced the number 6, 66, or 666 more than 10 or 20 times for the past 6 weeks (month and a half). I still pray and walk in Christ, but why am I suddenly seeing 6 everywhere?