Luke 1:20
And lo! thou shalt be silent, and not able to speak, until the day when these things shall come to pass, because thou didst not believe my words, which will be fulfilled in their season.
Luke 1:37
For nothing will be impossible with God.
Luke 18:27
But he said, What is impossible with men is possible with God.
Romans 4:20-21
nor did he waver in respect to the promise of God through unbelief, but was strong in faith, giving glory to God;
Romans 6:19-21
I speak in a way common among men on account of the weakness of your flesh. For as ye once yielded your members as slaves to impurity and to iniquity, in order to commit iniquity, so now yield your members as bondmen to righteousness in order to become holy.