'Bond servant' in the Bible

Whoever desires to be first among you shall be your bondservant,

Whoever of you wants to become first among you, shall be bondservant of all.

Jesus answered them, "Most certainly I tell you, everyone who commits sin is the bondservant of sin.

A bondservant doesn't live in the house forever. A son remains forever.

Were you called being a bondservant? Don't let that bother you, but if you get an opportunity to become free, use it.

For he who was called in the Lord being a bondservant is the Lord's free man. Likewise he who was called being free is Christ's bondservant.

But I say that so long as the heir is a child, he is no different from a bondservant, though he is lord of all;

So you are no longer a bondservant, but a son; and if a son, then an heir of God through Christ.

where there can't be Greek and Jew, circumcision and uncircumcision, barbarian, Scythian, bondservant, freeman; but Christ is all, and in all.

All my affairs will be made known to you by Tychicus, the beloved brother, faithful servant, and fellow bondservant in the Lord.

I fell down before his feet to worship him. He said to me, "Look! Don't do it! I am a fellow bondservant with you and with your brothers who hold the testimony of Jesus. Worship God, for the testimony of Jesus is the Spirit of Prophecy."

He said to me, "See you don't do it! I am a fellow bondservant with you and with your brothers, the prophets, and with those who keep the words of this book. Worship God."