¹⁸Now the birth of Jesus Christ took place in this way. When his mother Mary had been betrothed to Joseph, before they came together she was found to be with child from the Holy Spirit. ¹⁹And her husband Joseph, being a just man and unwilling to put her to shame, resolved to divorce her quietly. ²⁰But as he considered these things, behold, 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. ²¹She will bear a son, and you shall call his name Jesus, for he will save his people from their sins.” (Matthew 1:18-21 ESV)

I love these few words that the angel of the lord spoke to Joseph:

“for he will save his people from their sins.”