Luke 1:20
And behold, thou shalt be dumb, and unable to speak, until that day when these things shall come to pass, because thou hast not believed my words, which shall be fulfilled at their exact time.
Luke 1:37
For there is nothing impossible with God.
Luke 18:27
And he said, The things impossible with men, are possible with God.
Romans 4:20-21
for he disputed not against the promise of God with unbelief; but was mighty in faith, giving glory to God;
Romans 6:19-21
I speak humanly, because of the infirmity of your flesh: for as ye have presented your members servants to impurity and iniquity for iniquity; so now present your members servants to righteousness for holiness.