There are angels for different duties in heaven and on earth. Angels are God’s messengers. They specialize in different areas of duties. The one sent to Egypt was called the Destroyer. Its work was to kill the firstborn in Egypt. Angels can praise God(Psa.148:1). They rejoice in what God does(Job386-7). They bring answers to the prayers of the saints(Acts 12:5-10). They harken to the voice of Gods word(Psa.103;20)etc. Regardless of their roles, Dr Lamb says they communicate the presence of God in the midst of people. Angels are Gods agents for executing Gods judgement ( Gen.3:24). In Egypt, they did an excellent job. Pharaoh was forced to let Gods people go. Whatever held your condition bound will experience angelic visitation today, in Jesus Name. Angels are working for you.
For the Lord will pass through to smite the Egyptians; and when he seeth the blood upon the lintel, and on the two side posts, the Lord will pass over the door, and will not suffer the destroyer to come in unto your houses to smite you. Exodus 12:23 KJV