"Christ did not die for any upon condition, if they do believe; but he died for all God's elect, that they sould believe, and believing have eternal life. Faith itself is among the principal effects and fruits of the death of Christ... It is nowhere said in Scripture, nor can it reasonably be affirmed, that if we believe, Christ died for us, as though our believing should make that to be which was otherwise not, -the act create the object; but Christ died for us that we might believe. Salvation, indeed, is besowed conditionally; but faith, which is the condition, is absolutely procured."
John Owen The Death of Death in the Death of Christ The Banner of Truth Trust, 1967 With Introduction by J. I. Packer p. 123