“Will any one of you who has a servant plowing or keeping sheep say to him when he has come in from the field, ‘Come at once and recline at table’? Will he not rather say to him, ‘Prepare supper for me, and dress properly, and serve me while I eat and drink, and afterward you will eat and drink’? Does he thank the servant because he did what was commanded? So you also, when you have done all that you were commanded, say, ‘We are unworthy servants; we have only done what was our duty.’” (Luke 17:7-10)
Christians should acknowledge that God owes them nothing and that they owe him everything, even their very lives (ESV study Bible)
Do we act as though God owes us something? We don't do everything right, but even if we did, that would just have been what we were supposed to do in the first place. Even perfection wouldn't earn us anything from God and we're nowehere close to that. We are unworthy servants, which makes it even more ridiculous that Jesus came to serve and not be served and because of that we are welcomed as sons!