'Practice' in the Bible

No, you practice injustice in your hearts;with your hands you weigh out violence in the land.

Deliver me from those who practice sin,and save me from men of bloodshed.

How happy are those who uphold justice,who practice righteousness at all times.

This is my practice:I obey Your precepts.

Turn to me and be gracious to me,as is Your practice toward those who love Your name.