Correction:
Generally Christians view life as being a constant process of sin, REPENTANCE, and forgiveness.
This is why GOP sinners get continued support when they are caught in some public sin. They stand up (with their family by their side) and admit their sin(s), claim to repent, then seek and receive forgiveness. While some view such behavior as hypocritical, especially when the cycle repeats, it is consistent with their Christian views.
By trying to hide, and continuing to hide the sin, Trump has not repented, thus should not receive forgiveness. This lack of repentance while his Christian fundy followers continue to forgive and support him reveals their hypocrisy.
In point of fact, Trump never admits his sins, other than perhaps in the ceremonial sense. This is not consistent with the general Christian view that to receive forgiveness one must actually admit the sin.
Except that god can forward his agenda through any tool he chooses, as he chose to do with Pharaoh, certainly not god's servant. God could have used Obama, or Bush, or Bush, or Clinton, or Clinton, or any other Tom, Dick, or Harriet in the Presidential or janitorial slot.
Obviously, claiming Trump is god's tool is a pretty thin fig leaf. They choose to support Trump because he speaks their language: hate.