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Psalm 91:11 - Blessing of Angels.

For he shall give his angels charge over thee, to keep thee in
all thy ways. Psa 91:11 (KJV)

One of the functions of angels is to watch over believers
(Hebrews 1:14). There are examples of guardian angels in Scripture (1
Kings 19:5; Daniel 6:22; Matthew 18:10; Luke 16:22; Acts 12:7). Angels
can also be God's messengers (Matthew 2:13; Acts 27:23, 24). Angels
are not visible, except on special occasions (Numbers 22:31; Luke
2:9). Verses 11 and 12 were quoted by Satan when he tempted Jesus
(Matthew 4:6; Luke 4:10, 11). It is comforting to know that God watches
over us even in times of great stress and fear. [Life Application
SB]

Whatever happens, nothing shall hurt the believer; though
trouble and affliction befall, it shall come, not for his hurt, but for
good, though for the present it be not joyous but grievous. Those who
rightly know God, will set their love upon him. They by prayer
constantly call upon him. His promise is, that he will in due time deliver
the believer out of trouble, and in the mean time be with him in
trouble. The Lord will manage all his worldly concerns, and preserve his
life on earth, so long as it shall be good for him. For encouragement
in this he looks unto Jesus. He shall live long enough; till he has
done the work he was sent into this world for, and is ready for
heaven. Who would wish to live a day longer than God has some work to
do, either by him or upon him? A man may die young, yet be satisfied
with living. But a wicked man is not satisfied even with long life.
At length the believer's conflict ends; he has done for ever with
trouble, sin, and temptation. [Matthew Henry Commentary]

Oh, that we could all realize the nearness of heaven to earth!
When the earthborn children know it not, they have angels of light as
their companions. A silent witness guards every soul that lives,
seeking to draw that soul to Christ. As long as there is hope, until men
resist the Holy Spirit to their eternal ruin, they are guarded by
heavenly intelligences. 6T366,7

So, in all ages, angels have been near to Christ's faithful
followers. The vast confederacy of evil is arrayed against all who would
overcome; but Christ would have us look to the things which are not seen,
to the armies of heaven encamped about all who love God, to deliver
them. From what dangers, seen and unseen, we have been preserved
through the interposition of the angels, we shall never know, until in
the light of eternity we see the providences of God. Then we shall
know that the whole family of heaven was interested in the family
here below, and that messengers from the throne of God attended our
steps from day to day.  DA240