Listen to me, you who pursue righteousness and who seek the LORD: Look to the rock from which you were cut and to the quarry from which you were hewn; look to Abraham, your father, and to Sarah, who gave you birth. When I called him he was but one, and I blessed him and made him many. (Isaiah 51:1, 2)
"When I called him he was but one, and I blessed him and made him many."
The call came to Abraham and he set out from the midst of idol-worshipers to a land that God was going to show him. When God called him, He gave him a set of promises which He fulfilled eventually.
The LORD had said to Abram, "Leave your country, your people and your father's household and go to the land I will show you. "I will make you into a great nation and I will bless you; I will make your name great, and you will be a blessing. I will bless those who bless you, and whoever curses you I will curse; and all peoples on earth will be blessed through you." (Genesis 12:1-3)
With Abraham set out many others and they too were blessed. Abraham was a man of worship and wherever he went he set up an altar to the Lord and worshiped him there. Because of his obedience and faith in God, God blessed him in all things.
And the promise is for us too. The Bible says,
Therefore, the promise comes by faith, so that it may be by grace and may be guaranteed to all Abraham's offspring - not only to those who are of the law but also to those who are of the faith of Abraham. He is the father of us all. (Romans 4:16)
God has called you through Jesus Christ to be a part of His kingdom here on earth as well as in eternity and there is no greater blessing than that.