'Slave' in the Bible

Jesus answered them, "I tell you the solemn truth, everyone who practices sin is a slave of sin.

The slave does not remain in the family forever, but the son remains forever.

I tell you the solemn truth, the slave is not greater than his master, nor is the one who is sent as a messenger greater than the one who sent him.

I no longer call you slaves, because the slave does not understand what his master is doing. But I have called you friends, because I have revealed to you everything I heard from my Father.

Remember what I told you, 'A slave is not greater than his master.' If they persecuted me, they will also persecute you. If they obeyed my word, they will obey yours too.

Then Simon Peter, who had a sword, pulled it out and struck the high priest's slave, cutting off his right ear. (Now the slave's name was Malchus.)

But Simon Peter was left standing outside by the door. So the other disciple who was acquainted with the high priest came out and spoke to the slave girl who watched the door, and brought Peter inside.