Colossians 3:23

In whatever you do, work wholeheartedly, as though it were for the Lord and not [just] for people,

Colossians 3:17

And whatever you do, whether in [your] words or actions, do everything in the name [i.e., by the authority] of Christ, giving thanks to God the Father through Him.

Ephesians 6:6-7

Do not serve them only when you are being watched, just to gain their approval, but as slaves of Christ, doing what God wants from your heart.

Romans 14:8

For if we live, it is for the Lord's [honor]; or if we die, it is for the Lord's [honor]. So, whether we live or die, we belong to the Lord.

1 Peter 2:13

Submit yourselves to every authority set up by people for the Lord's sake. [Submit to] a king as the [highest] authority,

1 Peter 1:22

[Since] you have purified your souls by [your] obedience to the truth [i.e., the Gospel message], which produces a genuine love for your brothers, [now] you should have this kind of fervent, heartfelt love for one another.

1 Peter 2:15

For it is God's will that, by doing good, you should put to silence the ignorant [talk and actions] of foolish people.

Matthew 6:16

"In addition, when you fast [i.e., go without food and/or drink for religious reasons], do not be like the hypocrites with long faces, for they go around with gloomy expressions on their faces in order to advertise that they are fasting. It is true when I say to you, these people have [already] received their reward.

Romans 14:6

The person who observes a certain day [as specially sacred], does so out of devotion to the Lord. And the person who eats [only certain foods] does so out of devotion to the Lord, for he is thankful to God [for what he eats]. And the person who refuses to eat [certain foods], does so out of devotion to the Lord and he is thankful to God [for what he does eat].

Ephesians 5:22

Wives, you should submit to your own husbands, as you would 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 do, whether in [your] words or actions, do everything in the name [i.e., by the authority] of Christ, giving thanks to God the Father through Him.
1 Peter 1:22
[Since] you have purified your souls by [your] obedience to the truth [i.e., the Gospel message], which produces a genuine love for your brothers, [now] you should have this kind of fervent, heartfelt love for one another.

As

Matthew 6:16
"In addition, when you fast [i.e., go without food and/or drink for religious reasons], do not be like the hypocrites with long faces, for they go around with gloomy expressions on their faces in order to advertise that they are fasting. It is true when I say to you, these people have [already] received their reward.
Romans 14:6
The person who observes a certain day [as specially sacred], does so out of devotion to the Lord. And the person who eats [only certain foods] does so out of devotion to the Lord, for he is thankful to God [for what he eats]. And the person who refuses to eat [certain foods], does so out of devotion to the Lord and he is thankful to God [for what he does eat].
Ephesians 5:22
Wives, you should submit to your own husbands, as you would to the Lord.
Ephesians 6:6
Do not serve them only when you are being watched, just to gain their approval, but as slaves of Christ, doing what God wants from your heart.
1 Peter 2:13
Submit yourselves to every authority set up by people for the Lord's sake. [Submit to] a king as the [highest] authority,