God designed that Abraham should be a channel of light and blessing, that he should have a gathering influence, and that God should have a people on the earth. Abraham was to be in the world, reflecting in his life the character of Jesus. When he received the divine call, Abraham was not a man of renown, neither a lawgiver, nor a conqueror. He was a simple herdsman, dwelling in tents, but employing a large number of workmen to carry on his humble employment. And the honor which he received was because of his faithfulness to God, his strict integrity and just dealing.
The Lord said of him: "Shall I hide from Abraham that thing which I do; seeing that Abraham shall surely become a great and mighty nation, and all the nations of the earth shall be blessed in him? For I know him, that he will command his children and his household after him, and they shall keep the way of the Lord, to do justice and judgment; that the Lord may bring upon Abraham that which he hath spoken of him" (Gen. 18:17-19).
Abraham's unselfish life made him indeed a "spectacle unto the world, and to angels, and to men" (1 Cor. 4:9). And the Lord declared He would bless those who blessed Abraham, and that He would punish those who misused or injured him. Through Abraham's experience in his religious life a correct knowledge of Jehovah has been communicated to thousands; and his light will shed its beams all along the path of those who practice the piety, the faith, the devotion, and the obedience of Abraham.
Abraham had a knowledge of Christ; for the Lord had enlightened him in regard to the world's Redeemer. And he made known to his household and his children that the sacrificial offerings prefigured Christ, the Lamb of God, who was to be slain for the sins of the world. Thus he gathered converts to believe in the only true and living God.--Youth's Instructor, Mar. 4, 1897. YRP 255
The effort to bless others will react in blessings upon ourselves. This was the purpose of God in giving us a part to act in the plan of redemption. SC 79
After these things the word of the LORD came unto Abram in a vision, saying, Fear not, Abram: I am thy shield, and thy exceeding great reward. And Abram said, LORD God, what wilt thou give me, seeing I go childless, and the steward of my house is this Eliezer of Damascus? And Abram said, Behold, to me thou hast given no seed: and, lo, one born in my house is mine heir. And, behold, the word of the LORD came unto him, saying, This shall not be thine heir; but he that shall come forth out of thine own bowels shall be thine heir. And he brought him forth abroad, and said, Look now toward heaven, and tell the stars, if thou be able to number them: and he said unto him, So shall thy seed be. And he believed in the LORD; and he counted it to him for righteousness. Genesis 15:1-6 (King James Version)