“Whatever you do, work heartily, as for the Lord and not for men,”
Paul originally writes this to slaves doing work they never chose — if the principle holds there, it holds even more for whatever job you have today.
'Whatever' doesn't separate sacred tasks from ordinary ones — washing dishes and preaching a sermon fall under the same heart principle.
'Heartily' rules out half-effort work done just to avoid trouble — God wants genuine energy, not merely physical presence going through the motions.
The change of audience changes everything — once the Lord is who you're serving, human recognition stops being the fuel that keeps your effort going.
This verse turns routine into an act of worship — the table set, the report turned in, all of it becomes an offering when done with this intent.
Act: Before your next ordinary task today, quietly say 'this is for the Lord' before you start, and notice how it changes the effort you bring to it.