Jesus himself told his disciples to watch and wait. By extension, we being his disciples too, we must also be ready with our eyes and ears open.
Christ likened his return to us as like the bride groom coming to his home. As he directed his disciples in Luke 12:35 and 36 (Bible in Basic English), "Be ready, dressed as for a journey, with your lights burning. And be like men who are looking for their lord, when he comes back from the bride-feast; so that when he comes to the door, it will be open to him quickly."
According to John MacArthur, the original Greek word for servant actually meant slave. This is because he bought us with his atoning sacrifice on the cross.
We read in 1 Corinthians 6:20 (BBE) that, "For a payment has been made for you: let God be honoured in your body." In other words, we're Christ's property.
That being true, we must obey him always. As Paul wrote in Romans 6:16-18 (BBE), "Are you not conscious that you are the servants of him to whom you give yourselves to do his desire? if to sin, the end being death, or if to do the desire of God, the end being righteousness. But praise be to God that though you were the servants of sin, you have now given yourselves freely to that form of teaching under which you were placed; And being made free from sin you have been made the servants of righteousness."
If this sounds irksome to you, remember Christ's words in John 8:36 (BBE). "If then the son makes you free, you will be truly free."
