He staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God;
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Augustine of Hippo
AD 430
Paul says that Abraham “gave glory to God” when he was attacking those who were seeking their own glory in the sight of men by doing the works of the law.
Abraham trusted God even though God gave him no proof, nor even a sign. Rather, there were only mere words promising things which by nature were impossible.