Colossians 3:23

Whatever you do, do it with all your heart, as work for the Lord and not for men,

Colossians 3:17

And whatever you say or do, let it all be done with reference to the Lord Jesus, and through Him continue to give thanks to God the Father.

Ephesians 6:6-7

not serving them as though they were watching you, but as true slaves of Christ, trying to carry out the will of God.

Romans 14:8

indeed, if we live, we always live in relation to the Lord, and if we die, we always die in relation to the Lord. So whether we live or die we belong to the Lord.

1 Peter 2:13

For the Lord's sake submit to all human authority; to the emperor as supreme,

1 Peter 1:22

Since you have purified your souls by obeying the truth, in sincere love for the brotherhood you must love one another heartily and fervently,

1 Peter 2:15

For it is God's will that by doing right you should silence the ignorant talk of foolish people.

Matthew 6:16

"Also whenever you fast, you must not look gloomy like the hypocrites, for they put on a gloomy countenance, to let people see them fasting. I solemnly say to you, they already have their reward.

Romans 14:6

The man who keeps a certain day keeps it for the Lord. The man who eats anything does it for the Lord too, for he gives God thanks. The man who refuses to eat anything does it for the Lord too, and gives God thanks.

Ephesians 5:22

You married women must continue to live in subordination to your husbands, as you do to the Lord,

Treasury of Scripture Knowledge

Summary

And whatsoever ye do, do it heartily, as to the Lord, and not unto men;

Bible References

Whatsoever

Colossians 3:17
And whatever you say or do, let it all be done with reference to the Lord Jesus, and through Him continue to give thanks to God the Father.
1 Peter 1:22
Since you have purified your souls by obeying the truth, in sincere love for the brotherhood you must love one another heartily and fervently,

As

Matthew 6:16
"Also whenever you fast, you must not look gloomy like the hypocrites, for they put on a gloomy countenance, to let people see them fasting. I solemnly say to you, they already have their reward.
Romans 14:6
The man who keeps a certain day keeps it for the Lord. The man who eats anything does it for the Lord too, for he gives God thanks. The man who refuses to eat anything does it for the Lord too, and gives God thanks.
Ephesians 5:22
You married women must continue to live in subordination to your husbands, as you do to the Lord,
Ephesians 6:6
not serving them as though they were watching you, but as true slaves of Christ, trying to carry out the will of God.
1 Peter 2:13
For the Lord's sake submit to all human authority; to the emperor as supreme,