I also found the word doulos in these verses (this is by no means an exhaustive list). I am typing from the New International Version, though found the word from Strong's Bible Dictionary and the KJV Bible.Matthew 10:24-25 - A student is not above his teacher, nor a servant above his master. Is is enough for the student to be like his teacher, and the servant like his master. (See also John 13:16)Matthew 18:21-35 - (The parable of the unmerciful servant)Matthew 20:26-28 - Not so with you. Instead, whoever wants to be great among you must be your servant, and whoever wants to be first must be your slave -- just as the Son of Man did not come to be served, but to serve, and to give His life as a ransom for many.Matthew 24:45-51 - (How will the Lord find His servants when He returns? See also Luke 12:42-48, and the "midnight" thread.)Matthew 25:21, 23 - "His master replied, 'Well done, good and faithful servant!...'" (from the parable of the talents; see also Luke 19:17)Mark 10:44 - ...and whoever wants to be first must be slave of all.Mark 12:1-10 and Luke 20:9-18 - (The parable of the tenants)Luke 2:29 - "Sovereign Lord, as you have promised, you now dismiss your servant in peace...." (Simeon speaking, praising God for Jesus)Luke 14:15-25 - (The parable of the great banquet)John 8:34 - Jesus replied, "I tell you the truth, everyone who sins is a slave to sin."John 15:15 - I no longer call you servants, because a servant does not know his master's business. Instead, I have called you friends, for everything that I learned from my Father I have made known to you.Romans 1:1 - Of course. :-P (Also see Titus 1:1, James 1:1, 2 Peter 1:1, Jude 1, and Revelation 1:1)1 Corinthians 7:21-22 - Were you a slave when you were called? Don't let it trouble you -- although if you can gain your freedom, do so. For he who was a slave when he was called by the Lord is the Lord's freedman; similarily, he who was a free man when he was called is Christ's slave.1 Corinthians 9:19 - Though I am free and belong to no man, I make myself a slave [douloō] to everyone, to win as many as possible.Galatians 1:10 - Am I now trying to win the approval of men, or of God? Or am I trying to please men? If I were still trying to please men, I would not be a servant of Christ.Galatians 4:7 - So you are no longer a slave, but a son; and since you are a son, God has also made you heir. (See in context of 4:1-7)Philippians 2:7 - ...but made Himself nothing, taking the very nature of a servant, being made in human likeness. (See previous post, by InTheLight.)2 Timothy 2:24 - And the Lord's servant must not quarrel; instead, he must be kind to everyone, able to teach, not resentful.Philemon 16 - (Onesimus)Revelation 15:3 - (speaking of Moses)