“So that by two unchangeable things, in which it is impossible for God to lie, we who have fled for refuge might have strong encouragement to hold fast to the hope set before us” Hebrews 6:18
Only by His grace and mercy, God promised Abraham that He would bless and multiply his descendants. Though this should have been sufficient for Abraham, God knew doubts would enter his mind. And so He also swore an oath to Abraham and his heirs in order to confirm His promise. This oath was made out of the loving will of God.
It is important to see that God swore His promise not only to Abraham but also to his heirs. God knew that future generations of His people would be tempted to give up on Him because of the persecution they faced or because of the delay of God’s fulfilling His promise. He knew they would need encouragement to persevere in the midst of life trials and it remains true for us two thousand years later.
In this world of decay and death, it can be hard to believe that Christ is going to make all things new. But we can be confident of this because God has given us two unchangeable confirmations of it: His promise and His oath. Remember that God’s faithfulness guarantees that we who have fled for refuge to Christ will be saved.