“An angel of the Lord appeared to him in a dream, saying, “Joseph, son of David, do not fear to take Mary as your wife, for that which is conceived in her is from the Holy Spirit. She will bear a son, and you shall call his name Jesus, for he will save his people from their sins.” (Matthew 1:20-21 ESV)
The angel who appeared to Joseph in a dream stated very plainly what Jesus' mission on earth was – to save people from their sins.
'Sin' isn't a word we hear a lot these days, but it's very interesting to trace it's history. It didn't start in the Garden of Eden with Eve being tempted to eat the fruit of the tree as she had been forbidden to do, but the bible gives us glimpses into a time in heaven, before Eden. Maybe hundreds or thousands of years before Eden – if time existed there at all: Ezekiel 28:15 tells us of an event when Lucifer, who was a powerful angel, one of the closest to God, had chosen to usurp God's position - to be 'as God' - – and God speaks to him, saying, “You were perfect in your ways from the day you were created, until unrighteousnesswas found in you.” (New Heart English Bible). Unrighteousness is another word for sin.
Lucifer, who was later known as Satan, had rebelled against God. Sin, quite simply, is rebellion against God. Sin is the currency of Hell. When we sin, we are not doing something insignificant, we are doing Satan's will and not God's. We are rebelling against God. The problem is, though, that no matter how sorry we are that we have sinned, we are unable to put it right. That's why we need a Saviour to put it right - to cancel out sin, which He did on the Cross at Calvary.
No wonder the angels that filled the sky at the birth of Jesus declared, “We bring you good news! A Saviour is born who is Christ the Lord!”
Thanks be to God! There is a Saviour we can run to and confess our sins – and be forgiven from them.