www.bible.com/111/luk.12.40.niv
You don’t know the day or the time of Jesus’ return nor do you know the day or the time of your death. Jesus is telling you in this passage to always be ready. How can you be ready? The first and most important way you can be ready is to have already trusted your life to Jesus. This is the most important thing you can do to be ready, because it does not matter how many good deeds you have done or will do if you have not accepted God’s free gift of salvation. The process is very simple. All you have to do is tell God that you are sinner (confess your sins), acknowledge God as the Lord of your life (admitting that you are no longer in control and that God is now in control) and lastly asking God to save you from your sins (accepting God’s grace).
If you have already given your life to Jesus, then how are you to be ready? You are to be ready by doing the work that God has called you to do as his child. This means you are to display the same love that Jesus displayed while he was on earth and that he still displays to you every day. You are to show compassion to the poor and the needy. You are to have a hunger for justice and the willingness to fight against injustice. This is the second way you are to be ready: to be doing God’s work when Jesus returns or when you are called home to be with him.