'Free' in the Bible

Were you called [while] a slave? Do not let it be a concern to you. But if indeed you are able to become free, rather make use of [it].

For the one who is called in the Lord [while] a slave is the Lord's freedperson. Likewise the one who is called [while] free is a slave of Christ.

Are you bound to a wife? Do not seek release. Are you free from a wife? Do not seek a wife.

But I want you to be free from care. The unmarried person cares for the things of the Lord, how he may please the Lord.

A wife is bound for as long a time [as] her husband lives. But if her husband {dies}, she is free to marry whomever she wishes, only in the Lord.

Am I not free? Am I not an apostle? Have I not seen Jesus our Lord? Are you not my work in the Lord?

What then is my reward? That [when I] proclaim the gospel, I may offer the gospel free of charge, in order not to make full use of my right in the gospel.

For [although I] am free from all [people], I have enslaved myself to all, in order that I may gain more.

For by one Spirit we were all baptized into one body, whether Jews or Greeks, whether slaves or free [persons], and all were made to drink one Spirit.