All the promises of God lead back to the first promise concerning Christ of Genesis 3:15. The faith of the fathers in the Old Testament era, and our faith in the New Testament are one and the same faith in Christ Jesus… The faith of the fathers was directed at Christ… Time does not change the object of true faith, or the Holy Spirit. There has always been and always will be one mind, one impression, one faith concerning Christ among true believers whether they live in times past, now, or in times to come.

—Martin Luther, Commentary on Galatians 3:6-7