Now sin has marred God’s perfect work, yet that handwriting remains. Even now all created things declare the glory of His excellence. There is nothing, save the selfish heart of man, that lives unto itself. No bird that cleaves the air, no animal that moves upon the ground, but ministers to some other life. There is no leaf of the forest, or lowly blade of grass, but has its ministry. Every tree and shrub and leaf pours forth that element of life without which neither man nor animal could live; and man and animal, in turn, minister to the life of tree and shrub and leaf. The flowers breathe fragrance and unfold their beauty in blessing to the world. The sun sheds its light to gladden a thousand worlds. The ocean, itself the source of all our springs and fountains, receives the streams from every land, but takes to give. The mists ascending from its bosom fall in showers to water the earth, that it may bring forth and bud.  – DA 20.2 

The angels of glory find their joy in giving,—giving love and tireless watchcare to souls that are fallen and unholy. Heavenly beings woo the hearts of men; they bring to this dark world light from the courts above; by gentle and patient ministry they move upon the human spirit, to bring the lost into a fellowship with Christ which is even closer than they themselves can know.  – DA 21.1 

Jesus With Disciples