"What does it mean to sanctify God in the heart? It means showing great reverence before Him unceasingly, always bearing in mind the thought of His omnipresence; being eager at every instant to zealously please Him, and with all fear to beware of everything unpleasing to Him. Especially, it means committing all of your temporal and eternal life unto His fatherly care; to accept all that happens humbly, submissively and thankfully, as coming straight from His hand."
- Saint Theophan the Recluse