Hel. 5: 11
11 And he hath power given unto him from the Father
to redeem them from their sins because of repentance;
therefore he hath sent his angels to declare the tidings
of the conditions of repentance,

When you think of angels declaring glad tidings, you usually think of the Christmas story: there are the shepherds in their field, keeping watch over their flocks by night, and then the choir of angels who are singing “Glory to God!” Here are the angels again, revealing to the shepherds (the leaders in the church) who are keeping watch over their flocks at a dark time in the world, declaring the glad tidings that give you desire to glorify God: the conditions of repentance. There is a Way, and angels will lead you to Him.

which bringeth unto the power of the Redeemer, unto the salvation of their souls.