Remember always, that when God does tell you a thing you must believe it, just because it is God who has said it; and it is only by believing what God tells you that you can understand it. But when you are quite sure that God has not told you about something which you would like to know, you must never try to guess at it, or make up something about it out of your own head. Our thoughts and fancies may seem very pretty, and please us very much; but we are quite sure to be wrong when we try to peep at what God has not shown us in the wonderful glass of His word. But there is an answer to the last part of Sharley's question, and she found it in the Book of Job. When God was taking a great deal of pains to teach Job not to think himself wise or good--really not to think of himself at all--He asked him a great many questions which Job could not answer. This was one of the questions: "Where wast thou when I laid the foundations of the earth? declare, if thou hast understanding.... When the morning stars sang together, and all the sons of God shouted for joy?" (Job xxxviii. 4-7). From this question, which the Lord asked Job, we know that at the world's birthday, when its foundations were laid, angels were there, rejoicing in God's works, though we do not know when these "sons of God" were created. Angels are happy, blessed creatures; they are God's messengers, who "excel in strength and do His commandments, hearkening unto the voice of His word." All we are told about angels is very beautiful. When the Lord Jesus was born, you know it was an angel who brought to the shepherds of Bethlehem, as they watched their flocks, the "good tidings of great joy," that to them was born a Saviour, Christ the Lord. How glad he must have been to fly with such a wonderful message! And how the "multitude of the heavenly host" must have rejoiced as they praised God, saying, "Glory to God in the highest, and on earth peace, good will toward men" (Luke ii. 14). It is beautiful to see that angels rejoiced at the world's birthday, and also at the birth of Him who is the Saviour of the world. And there is "joy in the presence of the angels of God"--the Lord Jesus Himself has told us of this--whenever anyone is sorry for his sins and turns to Him. And there is another thing very beautiful to think of about the angels. They are God's ministers, or servants, who do His pleasure in serving His children here in this world; taking care of them, because they are so precious to Him. I want you to find the verse which tells us about this "ministry of angels," and then I will not ask you to look for any more references to-day. It is at the end of a chapter in the epistle to the Hebrews. "Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?" (Hebrews i. 14).