'Religion' in the Bible

but had certain questions against him of their own religion, and of one Jesus, who was dead, whom Paul affirmed to be alive.

having knowledge of me from the first, if they be willing to testify, that after the straitest sect of our religion I lived a Pharisee.

For ye have heard of my manner of life in time past in the Jews religion, how that beyond measure I persecuted the church of God, and made havoc of it:

and I advanced in the Jews religion beyond many of mine own age among my countrymen, being more exceedingly zealous for the traditions of my fathers.

If any man thinketh himself to be religious, while he bridleth not his tongue but deceiveth his heart, this man's religion is vain.

Pure religion and undefiled before our God and Father is this, to visit the fatherless and widows in their affliction, and to keep oneself unspotted from the world.